2006 · Shift 0

131 questions · JEE Main

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2006 · Shift 0

2006 · Shift 0

131 questions · JEE Main

Chemistry51 questions Mathematics31 questions Physics49 questions

Q1.The standard enthalpy of formation $Δ_{f} H^{o}$ at 298 K for methane, $C H_{4}$ (g), is –74.8 kJ mol–1. The additional information required to determine the average energy for C – H bond formation would be :
Chemistry · Thermodynamics · MCQ
Q2.An ideal gas is allowed to expand both reversibly and irreversibly in an isolated system. If Ti is the initial temperature and Tf is the final temperature, which of the following statements is correct?
Chemistry · Thermodynamics · MCQ
Q3.( $Δ H - Δ U$ ) for the formation of carbon monoxide (CO) from its elements at 298 K is : (R = 8.314 J K–1 mol–1)
Chemistry · Thermodynamics · MCQ
Q4.The enthalpy changes for the following processes are listed below : $C l_{2}$ (g) = 2 $C l$ (g), 242.3 kJ mol–1 $I_{2}$ (g) = 2 $I$ (g), 151.0 kJ mol–1 $I C l$ (g) = $I$ (g) + $C l$ (g), 211.3 kJ mol–1 $I_{2}$ (s) = $I_{2}$ (g), 62.76 kJ mol–1 Given that the…
Chemistry · Thermodynamics · MCQ
Q5.Phosphorus pentachloride dissociates as follows, in a closed reaction vessel $P C l_{5}$ (g) $⇋$ $P C l_{3}$ (g) + $C l_{2}$ (g) If total pressure at equilibrium of the reaction mixture is P and degree of dissociation of $P C l_{5}$ is…
Chemistry · Chemical Equilibrium · MCQ
Q6.The equilibrium constant for the reaction $S O_{3}$ (g) $⇋$ $S O_{2}$ (g) + $\frac{1}{2}$ $O_{2}$ (g) is Kc = 4.9 $\times$ 10–2. The value of Kc for the reaction 2 $S O_{2}$ (g) + $O_{2}$ (g) $⇋$ 2 $S O_{3}$ (g) will be :
Chemistry · Chemical Equilibrium · MCQ
Q7.Given the data at 25oC, $A g$ + $I^{-}$ $\to$ $A g I$ + e- , Eo = 0.152 V $A g$ $\to$ $A g^{+}$ + e-, Eo = -0.800 V What is the value of log Ksp for $A g I$ ? (2.303 RT/F = 0.059 V)
Chemistry · Electrochemistry · MCQ
Q8.The increasing order of stability of the following free radicals is
Chemistry · Basics of Organic Chemistry · MCQ
Q9.Increasing order of stability among the three main conformations (i.e. Eclipse, Anti, Gauche) of 2-fluoroethanol is
Chemistry · Basics of Organic Chemistry · MCQ
Q10. $C H_{3} B r$ + $N u^{-}$ $\to$ $C H_{3}$ - Nu + $B r^{-}$ The decreasing order of the rate of the above reaction with nucleophiles (Nu–) A to D is [Nu– = (A) PhO–, (B) AcO–, (C) HO–, (D) $C H_{3} O$ –]
Chemistry · Basics of Organic Chemistry · MCQ
Q11.How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a $C a^{2 +}$ ion?
Chemistry · Coordination Compounds · MCQ
Q12.Phenyl magnesium bromide reacts with methanol to give
Chemistry · Alcohols Phenols and Ethers · MCQ
Q13.Fluorobenzene ( $C_{6} H_{5} F$ ) can be synthesized in the laboratory
Chemistry · Haloalkanes and Haloarenes · MCQ
Q14.Reaction of trans-2-phenyl-1-bromocyclopentane on reaction with alcoholic KOH produces
Chemistry · Haloalkanes and Haloarenes · MCQ
Q15. $H B r$ reacts with $C H_{2} = C H - O C H_{3}$ under anhydrous conditions at room temperature to give
Chemistry · Alcohols Phenols and Ethers · MCQ
Q16.The increasing order of the rate of $H C N$ addition to compounds A – D is (A) $H C H O$ (B) $C H_{3} C O C H_{3}$ (C) $P h C O C H_{3}$ (D) $P h C O P h$
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q17.The term anomers of glucose refers to
Chemistry · Biomolecules · MCQ
Q18.The pyrimidine bases present in DNA are
Chemistry · Biomolecules · MCQ
Q19.In $F e (C O)_{5}$ , the Fe – C bond possesses :
Chemistry · Coordination Compounds · MCQ
Q20.The $I U P A C$ name of the compound shown below is : Includes diagram
Chemistry · Basics of Organic Chemistry · MCQ
Q21.The alkene formed as a major product in the above elimination reaction is Includes diagram
Chemistry · Hydrocarbons · MCQ
Q22.The structure of the major product formed in the following reaction is Includes diagram
Chemistry · Haloalkanes and Haloarenes · MCQ
Q23.The structure of the compound that gives a tribromo derivative on treatment with bromine water is
Chemistry · Alcohols Phenols and Ethers · MCQ
Q24.The electrophile involved in the above reaction is Includes diagram
Chemistry · Alcohols Phenols and Ethers · MCQ
Q25.Among the following the one that gives positives iodoform test upon reaction with $I_{2}$ and $N a O H$ is
Chemistry · Alcohols Phenols and Ethers · MCQ
Q26.The correct order of increasing acid strength of the compounds Includes diagram
Chemistry · Aldehydes Ketones and Carboxylic Acids · MCQ
Q27.A metal, $M$ forms chlorides in its $+ 2$ and $+ 4$ oxidation states. Which of the following statements about these chlorides is correct?
Chemistry · D and F Block Elements · MCQ
Q28.Rate of a reaction can be expressed by Arrhenius equation as: $k = A e^{- E / R T}$ In this equation, E represents
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q29.Among the following mixtures, dipole-dipole as the major interaction, is present in
Chemistry · Solutions · MCQ
Q30.18 g of glucose ( $C_{6} H_{12} O_{6}$ ) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at 100oC is
Chemistry · Solutions · MCQ
Q31.The molar conductivities $\land_{N a O A c}^{o}$ and $\land_{H C l}^{o}$ and at infinite dilution in water at 25oC are 91.0 and 426.2 Scm2/mol respectively. To calculate $\land_{H O A c}^{o}$ , the additional value required is
Chemistry · Electrochemistry · MCQ
Q32.Which of the following chemical reactions depicts the oxidizing behaviour of $H_{2} S O_{4}$ ?
Chemistry · Redox Reactions · MCQ
Q33.Resistance of a conductivity cell filled with a solution of an electrolyte of concentration 0.1 M is 100 $Ω$ . The conductivity of this solution is 1.29 S m–1. Resistance of the same cell when filled with 0.2 M of the same solution is…
Chemistry · Electrochemistry · MCQ
Q34.A reaction was found to be second order with respect to the concentration of carbon monoxide. If the concentration of carbon monoxide is doubled, with everything else kept the same, the rate of reaction will
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q35.In the transformation of $_{92}^{238} U$ to $_{92}^{234} U$ , if one emission is an α-particle, what should be the other emission(s)?
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q36.The following mechanism has been proposed for the reaction of $N O$ with $B r_{2}$ to form $N O B r$ : $N O$ (g) + $B r_{2}$ (g) $⇋$ $N O B r_{2}$ (g) $N O B r_{2}$ (g) + $N O$ (g) $\to$ 2 $N O B r$ (g) If the second step is the rate determining…
Chemistry · Chemical Kinetics and Nuclear Chemistry · MCQ
Q37.The increasing order of the first ionization enthalpies of the elements B, P, S and F (lowest first) is :
Chemistry · Periodic Table and Periodicity · MCQ
Q38.Which of the following statements is true?
Chemistry · P Block Elements · MCQ
Q39.The “spin-only” magnetic moment [in units of Bohr magneton, (µB)] of $N i^{2 +}$ in aqueous solution would be : (Atomic number of Ni = 28)
Chemistry · D and F Block Elements · MCQ
Q40.Lanthanoid contraction is caused due to :
Chemistry · D and F Block Elements · MCQ
Q41.The IUPAC name for the complex $[C o (N O_{2}) (N H_{3})_{5}]$ Cl $_{2}$ is
Chemistry · Coordination Compounds · MCQ
Q42.Nickel (Z = 28) combines with a uninegative monodentate ligand X– to form a paramagnetic complex $[N i X_{4}]^{2 -}$ . The number of unpaired electron(s) in the nickel and geometry of this complex ion are, respectively
Chemistry · Coordination Compounds · MCQ
Q43.How many moles of magnesium phosphate $M g_{3} (P O_{4})_{2}$ will contain 0.25 mole of oxygen atoms?
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q44.Density of a 2.05M solution of acetic acid in water is 1.02 g/mL The molality of the solution is
Chemistry · Some Basic Concepts of Chemistry · MCQ
Q45.Uncertainty in the position of an electron (mass = 9.1 $\times$ 10-31 kg) moving with a velocity 300 ms-1, accurate upto 0.001% will be (h = 6.63 $\times$ 10-34 Js)
Chemistry · Structure of Atom · MCQ
Q46.According to Bohr's theory, the angular momentum of an electron in 5th orbit is
Chemistry · Structure of Atom · MCQ
Q47.Which of the following sets of ions represents a collection of isoelectronic species?
Chemistry · Structure of Atom · MCQ
Q48.Following statements regarding the periodic trends of chemical reactivity of the alkali metals and the halogens are given. Which of these statements gives the correct picture?
Chemistry · Periodic Table and Periodicity · MCQ
Q49.Which of the following molecules/ions does not contain unpaired electrons?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q50.In which of the following molecules/ions are all the bonds not equal?
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q51.The decreasing values of bond angles from $N H_{3}$ (106o) to $S b H_{3}$ (91o ) down group-15 of the periodic table is due to
Chemistry · Chemical Bonding and Molecular Structure · MCQ
Q52.Suppose a population A has 100 observations 101, 102,........, 200, and another population B has 100 observations 151, 152,......., 250. If VA and VB represent the variances of the two populations, respectively, then $\frac{V _{A}}{V _{B}}$ …
Mathematics · Statistics · MCQ
Q53.If $0 < x < π$ and $cos x + sin x = \frac{1}{2},$ then $tan x$ is :
Mathematics · Trigonometric Ratio and Identites · MCQ
Q54.The value of $1 \int a [x] f^{'} (x) d x, a > 1$ where $[x]$ denotes the greatest integer not exceeding $x$ is
Mathematics · Definite Integration · MCQ
Q55.The set of points where $f (x) = \frac{x}{1 + ∣ x ∣}$ is differentiable is
Mathematics · Limits Continuity and Differentiability · MCQ
Q56.If $x^{m} . y^{n} = (x + y)^{m + n},$ then $\frac{d y}{d x}$ is
Mathematics · Differentiation · MCQ
Q57.The function $f (x) = \frac{x}{2} + \frac{2}{x}$ has a local minimum at
Mathematics · Application of Derivatives · MCQ
Q58.A triangular park is enclosed on two sides by a fence and on the third side by a straight river bank. The two sides having fence are of same length $x$ . The maximum area enclosed by the park is
Mathematics · Application of Derivatives · MCQ
Q59.If $A$ and $B$ are square matrices of size $n \times n$ such that $A^{2} - B^{2} = (A - B) (A + B),$ then which of the following will be always true?
Mathematics · Matrices and Determinants · MCQ
Q60.Let $A = (1324)$ and $B = (a 0 0 b), a, b \in N .$ Then
Mathematics · Matrices and Determinants · MCQ
Q61. $0 \int π x f (sin x) d x$ is equal to
Mathematics · Definite Integration · MCQ
Q62. $- \frac{3 π}{2} \int - \frac{π}{2} [(x + π)^{3} + cos^{2} (x + 3 π)] d x$ is equal to
Mathematics · Definite Integration · MCQ
Q63.The differential equation whose solution is $A x^{2} + B y^{2} = 1$ where $A$ and $B$ are arbitrary constants is of
Mathematics · Differential Equations · MCQ
Q64.At a telephone enquiry system the number of phone cells regarding relevant enquiry follow Poisson distribution with an average of $5$ phone calls during $10$ minute time intervals. The probability that there is at the most one phone call…
Mathematics · Probability · MCQ
Q65.The values of a, for which the points $A, B, C$ with position vectors $2 i - j + k, i - 3 j - 5 k$ and $a i - 3 j + k$ respectively are the vertices of a…
Mathematics · Vector Algebra · MCQ
Q66.The two lines $x = a y + b, z = cy + d;$ and $x = a^{'} y + b^{'}, z = c^{'} y + d^{'}$ are perpendicular to each other if :
Mathematics · 3D Geometry · MCQ
Q67.If $z^{2} + z + 1 = 0$ , where z is complex number, then value of $(z + \frac{1}{z})^{2} + (z^{2} + \frac{1}{z ^{2}})^{2} + (z^{3} + \frac{1}{z ^{3}})^{2} + .......... + (z^{6} + \frac{1}{z ^{6}})^{2}$ …
Mathematics · Complex Numbers · MCQ
Q68.The value of $k = 1 \sum 10 (sin \frac{2 k π}{11} + i cos \frac{2 k π}{11})$ is :
Mathematics · Complex Numbers · MCQ
Q69.If the roots of the quadratic equation $x^{2} + p x + q = 0$ are $tan 3 0^{\circ}$ and $tan 1 5^{\circ}$ , respectively, then the value of $2 + q - p$ is
Mathematics · Quadratic Equation and Inequalities · MCQ
Q70.All the values of $m$ for which both roots of the equation $x^{2} - 2 m x + m^{2} - 1 = 0$ are greater than $- 2$ but less then 4, lie in the interval
Mathematics · Quadratic Equation and Inequalities · MCQ
Q71.If $x$ is real, the maximum value of $\frac{3 x ^{2} + 9 x + 17}{3 x ^{2} + 9 x + 7}$ is
Mathematics · Quadratic Equation and Inequalities · MCQ
Q72.At an election, a voter may vote for any number of candidates, not greater than the number to be elected. There are 10 candidates and 4 are of be selected, if a voter votes for at least one candidate, then the number of ways in which he…
Mathematics · Permutations and Combinations · MCQ
Q73.If the expansion in powers of $x$ of the function $\frac{1}{( 1 - a x ) ( 1 - b x )}$ is $a_{0} + a_{1} x + a_{2} x^{2} + a_{3} x^{3} .....$ then $a_{n}$ is
Mathematics · Binomial Theorem · MCQ
Q74.If $a_{1}, a_{2}, .... a_{n}$ are in H.P., then the expression $a_{1} a_{2} + a_{2} a_{3} + .... + a_{n - 1} a_{n}$ is equal to
Mathematics · Sequences and Series · MCQ
Q75.Let $a_{1}$ , $a_{2}$ , $a_{3}$ .....be terms on A.P. If $\frac{a _{1} + a _{2} + ..... a _{p}}{a _{1} + a _{2} + ..... a _{q}} = \frac{p ^{2}}{q ^{2}}, p e q, t h e n \frac{a _{6}}{a _{21}}$ equals
Mathematics · Sequences and Series · MCQ
Q76.A straight line through the point $A (3, 4)$ is such that its intercept between the axes is bisected at $A$ . Its equation is :
Mathematics · Straight Lines and Pair of Straight Lines · MCQ
Q77.If $(a, a^{2})$ falls inside the angle made by the lines $y = \frac{x}{2}, x > 0$ and $y = 3 x, x > 0,$ then a belong to :
Mathematics · Straight Lines and Pair of Straight Lines · MCQ
Q78.If the lines $3 x - 4 y - 7 = 0$ and $2 x - 3 y - 5 = 0$ are two diameters of a circle of area $49 π$ square units, the equation of the circle is :
Mathematics · Circle · MCQ
Q79.Let $C$ be the circle with centre $(0, 0)$ and radius $3$ units. The equation of the locus of the mid points of the chords of the circle $C$ that subtend an angle of $\frac{2 π}{3}$ at its center is :
Mathematics · Circle · MCQ
Q80.The locus of the vertices of the family of parabolas $y = \frac{a ^{3} x ^{2}}{3} + \frac{a ^{2} x}{2} - 2 a$ is :
Mathematics · Parabola · MCQ
Q81.In the ellipse, the distance between its foci is $6$ and minor axis is $8$ . Then its eccentricity is :
Mathematics · Ellipse · MCQ
Q82.Let $W$ denote the words in the English dictionary. Define the relation $R$ by $R = {(x, y) \in W \times W ∣$ the words $x$ and $y$ have at least one letter in common}. Then, $R$ is
Mathematics · Sets and Relations · MCQ
Q83.The $r m s$ value of the electric field of the light coming from the Sun is $720 N / C .$ The average total energy density of the electromagnetic wave is
Physics · Electromagnetic Waves · MCQ
Q84.The circuit has two oppositively connected ideal diodes in parallel. What is the current following in the circuit? Includes diagram
Physics · Electronic Devices · MCQ
Q85.In the following, which one of the diodes is reverse biased?
Physics · Electronic Devices · MCQ
Q86.The anode voltage of a photocell is kept fixed. The wavelength $λ$ of the light falling on the cathode is gradually changed. The plate current $I$ of the photocell varies as follows
Physics · Dual Nature of Radiation · MCQ
Q87.If the lattice constant of this semiconductor is decreased, then which of the following is correct? Includes diagram
Physics · Electronic Devices · MCQ
Q88.An inductor $(L = 100 m H)$ , a resistor $(R = 100 Ω)$ and a battery $(E = 100 V)$ are initially connected in series as shown in the figure. After a long time the battery is disconnected after short… Includes diagram
Physics · Electromagnetic Induction · MCQ
Q89.Needles $N_{1}$ , $N_{2}$ and $N_{3}$ are made of ferromagnetic, a paramagnetic and a diamagnetic substance respectively. A magnet when brought close to them will
Physics · Magnetic Properties of Matter · MCQ
Q90.In a region, steady and uniform electric and magnetic fields are present. These two fields are parallel to each other. A charged particle is released from rest in this region. The path of the particle will be a
Physics · Magnetics · MCQ
Q91.A long solenoid has $200$ turns per $c m$ and carries a current $i .$ The magnetic field at its center is $6.28 \times 1 0^{- 2} W e b er / m^{2} .$ Another long solenoid has $100$ turns per $c m$ and it carries a current $\frac{i}{3}$ . The…
Physics · Magnetics · MCQ
Q92.Which of the following units denotes the dimension $\frac{M L ^{2}}{Q ^{2}}$ , where $Q$ denotes the electric charge?
Physics · Electromagnetic Induction · MCQ
Q93.In an $A C$ generator, a coil with $N$ turns, all of the same area $A$ and total resistance $R,$ rotates with frequency $ω$ in a magnetic field $B .$ The maximum value of $e m f$ generated in the coil is
Physics · Alternating Current · MCQ
Q94.In a series resonant $L C R$ circuit, the voltage across $R$ is $100$ volts and $R = 1 k Ω$ with $C = 2 μ F .$ The resonant frequency $ω$ is $200 r a d / s$ . At resonance the voltage across $L$ is
Physics · Alternating Current · MCQ
Q95.The flux linked with a coil at any instant $^{'} t^{'}$ is given by $ϕ = 10 t^{2} - 50 t + 250$ The induced $e m f$ at $t = 3 s$ is
Physics · Electromagnetic Induction · MCQ
Q96.The refractive index of a glass is $1.520$ for red light and $1.525$ for blue light. Let $D_{1}$ and $D_{2}$ be angles of minimum deviation for red and blue light respectively in a prism of this glass. Then,
Physics · Geometrical Optics · MCQ
Q97.The threshold frequency for a metallic surface corresponds to an energy of $6.2 e V$ and the stopping potential for a radiation incident on this surface is $5 V .$ The incident radiation lies in
Physics · Dual Nature of Radiation · MCQ
Q98.An alpha nucleus of energy $\frac{1}{2} m v^{2}$ bombards a heavy nuclear target of charge $Z e$ . Then the distance of closest approach for the alpha nucleus will be proportional to
Physics · Atoms and Nuclei · MCQ
Q99.The time taken by a photoelectron to come out after the photon strikes is approximately
Physics · Dual Nature of Radiation · MCQ
Q100.If the ratio of the concentration of electrons to that of holes in a semiconductor is $\frac{7}{5}$ and the ratio of currents is $\frac{7}{4},$ then what is the ratio of their drift velocities?
Physics · Electronic Devices · MCQ
Q101.When $_{3} L i^{7}$ nuclei are bombarded by protons, and the resultant nuclei are $_{4} B e^{8}$ , the emitted particles will be
Physics · Atoms and Nuclei · MCQ
Q102.A solid which is not transparent to visible light and whose conductivity increases with temperature is formed by
Physics · Electronic Devices · MCQ
Q103.If the binding energy per nucleon in $_{3}^{7} L i$ and $_{2}^{4} H e$ nuclei are $5.60 M e V$ and $7.06 M e V$ respectively, then in the reaction $p +_{3}^{7} L i \to 2_{2}^{4} H e$ energy of proton must be
Physics · Atoms and Nuclei · MCQ
Q104.The resistance of bulb filmanet is $100Ω$ at a temperature of $10 0^{\circ} C .$ If its temperature coefficient of resistance be $0.005$ per $^{\circ} C$ , its resistance will become $200 Ω$ at a temperature of
Physics · Current Electricity · MCQ
Q105.If the terminal speed of a sphere of gold (density $= 19.5 k g / m^{3}$ ) is $0.2 m / s$ in a viscous liquid (density $= 1.5 k g / m^{3}$ , find the terminal speed of a sphere of silver (density $= 10.5 k g / m^{3}$ ) of the same size in the…
Physics · Properties of Matter · MCQ
Q106.A wire elongates by $l mm$ when a LOAD $W$ is hanged from it. If the wire goes over a pulley and two weights $W$ each are hung at the two ends, the elongation of the wire will be (in $mm$ )
Physics · Properties of Matter · MCQ
Q107.The work of $146 k J$ is performed in order to compress one kilo mole of gas adiabatically and in this process the temperature of the gas increases by $7^{\circ} C .$ The gas is $(R = 8.3 J m o l^{- 1} K^{- 1})$
Physics · Heat and Thermodynamics · MCQ
Q108.Assuming the Sun to be a spherical body of radius $R$ at a temperature of $T K$ , evaluate the total radiant powered incident of Earth at a distance $r$ from the Sun Where r0 is the radius of the Earth and $σ$ is Stefan's constant.
Physics · Heat and Thermodynamics · MCQ
Q109.Two rigid boxes containing different ideal gases are placed on a table. Box A contains one mole of nitrogen at temperature $T_{0},$ while Box contains one mole of helium at temperature $(\frac{7}{3}) T_{0} .$ The boxes are…
Physics · Heat and Thermodynamics · MCQ
Q110.A force of $- F k$ acts on $O,$ the origin of the coordinate system. The torque about the point $(1, - 1)$ is Includes diagram
Physics · Rotational Motion · MCQ
Q111.Starting from the origin a body oscillates simple harmonically with a period of $2 s .$ After what time will its kinetic energy be $75%$ of the total energy?
Physics · Simple Harmonic Motion · MCQ
Q112.The maximum velocity of a particle, executing simple harmonic motion with an amplitude $7 mm,$ is $4.4 m / s .$ The period of oscillation is
Physics · Simple Harmonic Motion · MCQ
Q113.A string is stretched between fixed points separated by $75.0 c m .$ It is observed to have resonant frequencies of $420 H z$ and $315 H z$ . There are no other resonant frequencies between these two. Then, the lowest resonant frequency for this…
Physics · Waves · MCQ
Q114.An electric dipole is placed at an angle of $3 0^{\circ}$ to a non-uniform electric field. The dipole will experience
Physics · Electrostatics · MCQ
Q115.Two spherical conductors $A$ and $B$ of radii $1 mm$ and $2 mm$ are separated by a distance of $5 c m$ and are uniformly charged. If the spheres are connected by a conducting wire then in equilibrium condition, the ratio of the magnitude of…
Physics · Electrostatics · MCQ
Q116.Two insulating plates are both uniformly charged in such a way that the potential difference between them is $V_{2} - V_{1} = 20 V .$ (i.e., plate $2$ is at a higher potential). The plates are separated by $d = 0.1 m$ and can be treated as… Includes diagram
Physics · Electrostatics · MCQ
Q117.A thermocouple is made from two metals, Antimony and Bismuth. If one junction of the couple is kept hot and the other is kept cold, then, an electric current will
Physics · Current Electricity · MCQ
Q118.An electric bulb is rated $220$ volt - $100$ watt. The power consumed by it when operated on $110$ volt will be
Physics · Current Electricity · MCQ
Q119.In a Wheatstone's bridge, three resistance $P, Q$ and $R$ connected in the three arms and the fourth arm is formed by two resistances $S_{1}$ and $S_{2}$ connected in parallel. The condition for the bridge to be balanced will be
Physics · Current Electricity · MCQ
Q120.The current $I$ drawn from the $5$ volt source will be Includes diagram
Physics · Current Electricity · MCQ
Q121.A thin circular ring of mass $m$ and radius $R$ is rotating about its axis with a constant angular velocity $ω$ . Two objects each of mass $M$ are attached gently to the opposite ends of a diameter of the ring. The ring now rotates…
Physics · Rotational Motion · MCQ
Q122.A particle located at x = 0 at time t = 0, starts moving along the positive x-direction with a velocity 'v' that varies as $v = α x$ . The displacement of the particle varies with time as
Physics · Motion in A Straight Line · MCQ
Q123.A mass of $M k g$ is suspended by a weightless string. The horizontal force that is required to displace it until the string makes an angle of $4 5^{\circ}$ with the initial vertical direction is
Physics · Work Power and Energy · MCQ
Q124.A ball of mass $0.2 k g$ is thrown vertically upwards by applying a force by hand. If the hand moves $0.2 m$ while applying the force and the ball goes upto $2 m$ height further, find the magnitude of the force. (consider $g = 10 m / s^{2}$ ).
Physics · Work Power and Energy · MCQ
Q125.A coin is placed on a horizontal platform which undergoes vertical simple harmonic motoin of angular frequency $ω .$ The amplitude of oscillation is gradually increased. The coin will leave contact with the platform for the first time
Physics · Simple Harmonic Motion · MCQ
Q126.A player caught a cricket ball of mass $150 g$ moving at a rate of $20 m / s .$ If the catching process is completed in $0.1 s,$ the force of the blow exerted by the ball on the hand of the player is equal to
Physics · Center of Mass · MCQ
Q127.A particle of mass $100 g$ is thrown vertically upwards with a speed of $5 m / s$ . The work done by the force of gravity during the time the particle goes up is
Physics · Work Power and Energy · MCQ
Q128.The potential energy of a $1 k g$ particle free to move along the $x$ -axis is given by $V (x) = (\frac{x ^{4}}{4} - \frac{x ^{2}}{2}) J$ . The total mechanical energy of the particle is $2 J .$ Then, the maximum…
Physics · Work Power and Energy · MCQ
Q129.A bomb of mass $16 k g$ at rest explodes into two pieces of masses $4 k g$ and $12 k g .$ The velocity of the $12 k g$ mass is $4 m s^{- 1} .$ The kinetic energy of the other mass is
Physics · Center of Mass · MCQ
Q130.Consider a two particle system with particles having masses $m_{1}$ and $m_{2}$ . If the first particle is pushed towards the center of mass through a distance $d,$ by what distance should the second particle is moved, so as to keep the…
Physics · Center of Mass · MCQ
Q131.Four point masses, each of value $m,$ are placed at the corners of a square $A B C D$ of side $l$ . The moment of inertia of this system about an axis passing through $A$ and parallel to $B D$ is
Physics · Rotational Motion · MCQ