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Physics · 2022 · 27 Jul · Shift 1

26 questions from this JEE Main paper

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2022 · 27 Jul · Shift 1
Physics

Physics · 2022 · 27 Jul · Shift 1

26 questions from this JEE Main paper

Units and Measurements2 questions Motion in A Straight Line1 questions Work Power and Energy1 questions Laws of Motion1 questions Properties of Matter2 questions Gravitation1 questions Heat and Thermodynamics3 questions Electrostatics2 questions Current Electricity3 questions Alternating Current2 questions Electromagnetic Waves1 questions Geometrical Optics1 questions Dual Nature of Radiation1 questions Electronic Devices1 questions Wave Optics1 questions Simple Harmonic Motion1 questions Rotational Motion1 questions Motion in A Plane1 questions

Q47.A torque meter is calibrated to reference standards of mass, length and time each with $5%$ accuracy. After calibration, the measured torque with this torque meter will have net accuracy of :
Physics · Units and Measurements · MCQ
Q48.A bullet is shot vertically downwards with an initial velocity of $100 m / s$ from a certain height. Within 10 s, the bullet reaches the ground and instantaneously comes to rest due to the perfectly inelastic collision.…
Physics · Motion in A Straight Line · MCQ
Q49.Sand is being dropped from a stationary dropper at a rate of $0.5 kgs^{- 1}$ on a conveyor belt moving with a velocity of $5 ms^{- 1}$ . The power needed to keep the belt moving with the same velocity will be :
Physics · Work Power and Energy · MCQ
Q50.A bag is gently dropped on a conveyor belt moving at a speed of $2 m / s$ . The coefficient of friction between the conveyor belt and bag is $0.4$ . Initially, the bag slips on the belt before it stops due to friction. The…
Physics · Laws of Motion · MCQ
Q51.Two cylindrical vessels of equal cross-sectional area $16 cm^{2}$ contain water upto heights $150 cm$ and $150 cm$ respectively. The vessels are interconnected so that the water levels in them become equal.…
Physics · Properties of Matter · MCQ
Q52.Two satellites $A$ and $B$ , having masses in the ratio $4 : 3$ , are revolving in circular orbits of radii $3 r$ and $4 r$ respectively around the earth. The ratio of total mechanical energy of…
Physics · Gravitation · MCQ
Q53.If $K_{1}$ and $K_{2}$ are the thermal conductivities, $L_{1}$ and $L_{2}$ are the lengths and $A_{1}$ and $A_{2}$ are the cross sectional areas of steel and copper rods respectively such that $\frac{K _{2}}{K _{1}} = 9, \frac{A _{1}}{A _{2}} = 2, \frac{L _{1}}{L _{2}} = 2$ … Includes diagram
Physics · Heat and Thermodynamics · MCQ
Q54.Read the following statements : A. When small temperature difference between a liquid and its surrounding is doubled, the rate of loss of heat of the liquid becomes twice. B. Two bodies $P$ and $Q$ having equal surface areas are maintained…
Physics · Heat and Thermodynamics · MCQ
Q55.Same gas is filled in two vessels of the same volume at the same temperature. If the ratio of the number of molecules is $1 : 4$ , then A. The r.m.s. velocity of gas molecules in two vessels will be the same. B. The ratio of pressure in…
Physics · Heat and Thermodynamics · MCQ
Q56.Two identical positive charges $Q$ each are fixed at a distance of '2a' apart from each other. Another point charge $q_{0}$ with mass 'm' is placed at midpoint between two fixed charges. For a small displacement along the line joining the…
Physics · Electrostatics · MCQ
Q57.Two sources of equal emfs are connected in series. This combination is connected to an external resistance R. The internal resistances of the two sources are $r_{1}$ and $r_{2}$ $(r_{1} > r_{2})$ . If the potential difference…
Physics · Current Electricity · MCQ
Q58.A direct current of $4 A$ and an alternating current of peak value $3 Ω$ flow through resistance of $3 Ω$ and $2 Ω$ respectively. The ratio of heat produced in the two resistances in same interval of time…
Physics · Alternating Current · MCQ
Q59.A beam of light travelling along $X$ -axis is described by the electric field $E_{y} = 900 sin ω (t - x / c)$ . The ratio of electric force to magnetic force on a charge $q$ moving along $Y$ -axis with a speed of $3 \times 1 0^{7} ms^{- 1}$ …
Physics · Electromagnetic Waves · MCQ
Q60.A microscope was initially placed in air (refractive index 1). It is then immersed in oil (refractive index 2). For a light whose wavelength in air is $λ$ , calculate the change of microscope's resolving power due to oil and choose…
Physics · Geometrical Optics · MCQ
Q61.An electron (mass $m$ ) with an initial velocity $v = v_{0} \hat{i} (v_{0} > 0)$ is moving in an electric field $E = - E_{0} \hat{i} (E_{0} > 0)$ where $E_{0}$ is constant. If at $t = 0$ de…
Physics · Dual Nature of Radiation · MCQ
Q62.A logic gate circuit has two inputs A and B and output Y. The voltage waveforms of A, B and Y are shown below. The logic gate circuit is : Includes diagram
Physics · Electronic Devices · MCQ
Q63.In a meter bridge experiment, for measuring unknown resistance 'S', the null point is obtained at a distance $5.6 k Ω$ from the left side as shown at point D. If R is $5.6 k Ω$ , then the value of unknown resistance 'S'… Includes diagram
Physics · Current Electricity · Numerical
Q64.The one division of main scale of Vernier callipers reads $1 mm$ and 10 divisions of Vernier scale is equal to the 9 divisions on main scale. When the two jaws of the instrument touch each other, the zero of the Vernier lies to…
Physics · Units and Measurements · Numerical
Q65.Two beams of light having intensities I and 4I interfere to produce a fringe pattern on a screen. The phase difference between the two beams are $π /2$ and $π /3$ at points $A$ and $B$ respectively. The difference…
Physics · Wave Optics · Numerical
Q66.To light, a $50 W, 100 V$ lamp is connected, in series with a capacitor of capacitance $\frac{50}{π x} μ F$ , with $200 V, 50 Hz AC$ source. The value of $x$ will be …
Physics · Alternating Current · Numerical
Q67.A $1 A$ long copper wire carries a current of $2.0 mm^{2}$ . If the cross section of the wire is $2.0 mm^{2}$ and the resistivity of copper is $1.7 \times 1 0^{- 8} Ω m$ , the force experienced by moving…
Physics · Current Electricity · Numerical
Q68.A long cylindrical volume contains a uniformly distributed charge of density $ρ Cm^{- 3}$ . The electric field inside the cylindrical volume at a distance $x = \frac{2 ε _{0}}{ρ} m$ from its axis is … Includes diagram
Physics · Electrostatics · Numerical
Q69.A mass $A_{1}$ , attached to a horizontal spring, executes SHM with an amplitude $A_{1}$ . When this mass passes through its mean position, then a smaller mass of $124 g$ is placed over it and both masses move…
Physics · Simple Harmonic Motion · Numerical
Q70.A square aluminum (shear modulus is $25 \times 1 0^{9} Nm^{- 2}$ ) slab of side $15 cm$ and thickness $18.0 \times 1 0^{4} N$ is subjected to a shearing force (on its narrow face) of $18.0 \times 1 0^{4} N$ . The lower…
Physics · Properties of Matter · Numerical
Q71.A pulley of radius $F = (12 t - 3 t^{2}) N$ is rotated about its axis by a force $F = (12 t - 3 t^{2}) N$ applied tangentially (while t is measured in seconds). If moment of inertia of the pulley about its axis of…
Physics · Rotational Motion · Numerical
Q72.A ball of mass m is thrown vertically upward. Another ball of mass $θ$ is thrown at an angle $θ$ with the vertical. Both the balls stay in air for the same period of time. The ratio of the heights attained by the two balls…
Physics · Motion in A Plane · Numerical