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Physics · 2002 · Shift 0

70 questions from this JEE Main paper

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2002 · Shift 0
Physics

Physics · 2002 · Shift 0

70 questions from this JEE Main paper

Electronic Devices3 questions Electromagnetic Waves2 questions Geometrical Optics4 questions Current Electricity5 questions Magnetics5 questions Alternating Current2 questions Electromagnetic Induction2 questions Atoms and Nuclei1 questions Dual Nature of Radiation2 questions Capacitor2 questions Rotational Motion4 questions Gravitation4 questions Work Power and Energy3 questions Laws of Motion6 questions Heat and Thermodynamics8 questions Simple Harmonic Motion3 questions Waves5 questions Electrostatics3 questions Units and Measurements1 questions Motion in A Straight Line2 questions Properties of Matter1 questions Center of Mass1 questions Circular Motion1 questions

Q115.The energy band gap is maximum in
Physics · Electronic Devices · MCQ
Q116.Which of the following are not electromagnetic waves?
Physics · Electromagnetic Waves · MCQ
Q117.If two mirrors are kept at $6 0^{\circ}$ to each other, then the number of images formed by them is
Physics · Geometrical Optics · MCQ
Q118.A wire when connected to $220 V$ mains supply has power dissipation $P_{1} .$ Now the wire is cut into two equal pieces which are connected in parallel to the same supply. Power dissipation in this case is $P_{2} .$ Then $P_{2} : P_{1}$ is
Physics · Current Electricity · MCQ
Q119.If $θ_{1},$ is the inversion temperature, $θ_{n}$ is the neutral temperature, $θ_{c}$ is the temperature of the cold junction, then
Physics · Current Electricity · MCQ
Q120.The mass of product liberated on anode in an electrochemical cell depends on (where $t$ is the time period for which the current is passed).
Physics · Current Electricity · MCQ
Q121.If a current is passed through a spring then the spring will
Physics · Magnetics · MCQ
Q122.If in the circuit, power dissipation is $150 W,$ then $R$ is Includes diagram
Physics · Current Electricity · MCQ
Q123.If in a circular coil $A$ of radius $R,$ current $I$ is flowing and in another coil $B$ of radius $2 R$ a current $2 I$ is flowing, then the ratio of the magnetic fields $B_{A}$ and $B_{B}$ , produced by them will be
Physics · Magnetics · MCQ
Q124.If an electron and a proton having same momentum enter perpendicular to a magnetic field, then
Physics · Magnetics · MCQ
Q125.The time period of a charged particle undergoing a circular motion in a uniform magnetic field is independent of its
Physics · Magnetics · MCQ
Q126.Wires $1$ and $2$ carrying currents $i_{1}$ and $i_{2}$ respectively are inclined at an angle $θ$ to each other. What is the force on a small element $d l$ of wire $2$ at a distance of $r$ from wire $1$ (as shown in figure) due to the… Includes diagram
Physics · Magnetics · MCQ
Q127.The power factor of $A C$ circuit having resistance $(R)$ and inductance $(L)$ connected in series and an angular velocity $ω$ is
Physics · Alternating Current · MCQ
Q128.In a transformer, number of turns in the primary coil are $140$ and that in the secondary coil are $280.$ If current in primary coil is $4 A,$ then that in the secondary coil is
Physics · Alternating Current · MCQ
Q129.An astronomical telescope has a large aperture to
Physics · Geometrical Optics · MCQ
Q130.Electromagnetic waves are transverse in nature is evident by
Physics · Electromagnetic Waves · MCQ
Q131.Wavelength of light used in an optical instrument are $λ_{1} = 4000 A \circ$ and $λ_{2} = 5000 A \circ,$ then ratio of their respective resolving powers (corresponding to $λ_{1}$ and $λ_{2}$ …
Physics · Geometrical Optics · MCQ
Q132.Which of the following is used in optical fibres?
Physics · Geometrical Optics · MCQ
Q133.The inductance between $A$ and $D$ is Includes diagram
Physics · Electromagnetic Induction · MCQ
Q134.A conducting square loop of side $L$ and resistance $R$ moves in its plane with a uniform velocity $v$ perpendicular to one of its sides. A magnetic induction $B$ constant in time and space, pointing perpendicular and into the plane at the… Includes diagram
Physics · Electromagnetic Induction · MCQ
Q135.If $13.6 e V$ energy is required to ionize the hydrogen atom, then the energy required to remove an electron from $n = 2$ is
Physics · Atoms and Nuclei · MCQ
Q136.At absolute zero, Si acts as
Physics · Electronic Devices · MCQ
Q137.Sodium and copper have work functions $2.3 e V$ and $4.5 e V$ respectively. Then the ratio of the wavelengths is nearest to
Physics · Dual Nature of Radiation · MCQ
Q138.Formation of covalent bonds in compounds exhibits
Physics · Dual Nature of Radiation · MCQ
Q139.By increasing the temperature, the specific resistance of a conductor and a semiconductor
Physics · Electronic Devices · MCQ
Q140.Capacitance (in $F$ ) of a spherical conductor with radius $1 m$ is
Physics · Capacitor · MCQ
Q141.Moment of inertia of a circular wire of mass $M$ and radius $R$ about its diameter is
Physics · Rotational Motion · MCQ
Q142.The escape velocity of a body depends upon mass as
Physics · Gravitation · MCQ
Q143.A spring of force constant $800 N / m$ has an extension of $5 c m .$ The work done in extending it from $5 c m$ to $15 c m$ is
Physics · Work Power and Energy · MCQ
Q144.One end of a mass-less rope, which passes over a mass-less and friction-less pulley $P$ is tied to a hook $C$ while the other end is free. Maximum tension that the rope can bear is $360 N .$ With what value of maximum safe acceleration (in $m s^{- 2}$ … Includes diagram
Physics · Laws of Motion · MCQ
Q145.Infrared radiation is detected by
Physics · Heat and Thermodynamics · MCQ
Q146.Heat given to a body which raises its temperature by $1^{\circ} C$ is
Physics · Heat and Thermodynamics · MCQ
Q147.Which of the following is more close to a black body?
Physics · Heat and Thermodynamics · MCQ
Q148.If mass-energy equivalence is taken into account, when water is cooled to form ice, the mass of water should
Physics · Heat and Thermodynamics · MCQ
Q149.Cooking gas containers are kept in a lorry moving with uniform speed. The temperature of the gas molecules inside will
Physics · Heat and Thermodynamics · MCQ
Q150.At what temperature is the $r . m . s$ velocity of a hydrogen molecule equal to that of an oxygen molecule at $4 7^{\circ} C ?$
Physics · Heat and Thermodynamics · MCQ
Q151.Two spheres of the same material have radii $1 m$ and $4 m$ and temperatures $4000 K$ and $2000 K$ respectively. The ratio of the energy radiated per second by the first sphere to that by the second is
Physics · Heat and Thermodynamics · MCQ
Q152.1 mole of a gas with $γ = 7/5$ is mixed with $1$ mole of a gas with $γ = 5/3,$ then the value of $γ$ for the resulting mixture is
Physics · Heat and Thermodynamics · MCQ
Q153.If a spring has time period $T,$ and is cut into $n$ equal parts, then the time period of each part will be
Physics · Simple Harmonic Motion · MCQ
Q154.In a simple harmonic oscillator, at the mean position
Physics · Simple Harmonic Motion · MCQ
Q155.A child swinging on a swing in sitting position, stands up, then the time period of the swing will
Physics · Simple Harmonic Motion · MCQ
Q156.length of a string tied to two rigid supports is $40 c m$ . Maximum length (wavelength in $c m$ ) of a stationary wave produced on it is
Physics · Waves · MCQ
Q157.A tuning fork arrangement (pair) produces $4$ beats/sec with one fork of frequency $288 c p s .$ A little wax is placed on the unknown fork and it then produces $2$ beats/sec. The frequency of the unknown fork is
Physics · Waves · MCQ
Q158.Tube $A$ has bolt ends open while tube $B$ has one end closed, otherwise they are identical. The ratio of fundamental frequency of tube $A$ and $B$ is
Physics · Waves · MCQ
Q159.A wave $y = a$ $sin (ω t - k x)$ on a string meets with another wave producing a node at $x = 0.$ Then the equation of the unknown wave is
Physics · Waves · MCQ
Q160.When temperature increases, the frequency of a tuning fork
Physics · Waves · MCQ
Q161.On moving a charge of $20$ coulomb by $2 c m, 2 J$ of work is done, then the potential differences between the points is
Physics · Electrostatics · MCQ
Q162.If there are $n$ capacitors in parallel connected to $V$ volt source, then the energy stored is equal to
Physics · Capacitor · MCQ
Q163.A charged particle $q$ is placed at the centre $O$ of cube of length $L (A B C D E F G H) .$ Another same charge $q$ is placed at a distance $L$ from $O$ . Then the electric flux through $A B C D$ is Includes diagram
Physics · Electrostatics · MCQ
Q164.If a charge $q$ is placed at the center of the line joining two equal charges $Q$ such that the system is in equilibrium then the value of $q$ is
Physics · Electrostatics · MCQ
Q165.If an ammeter is to be used in place of a voltmeter, then we must connect with the ammeter a
Physics · Current Electricity · MCQ
Q166.The kinetic energy needed to project a body of mass $m$ from the earth surface (radius $R$ ) to infinity is
Physics · Gravitation · MCQ
Q167.Identify the pair whose dimensions are equal
Physics · Units and Measurements · MCQ
Q168.A ball whose kinetic energy E, is projected at an angle of $4 5^{\circ}$ to the horizontal. The kinetic energy of the ball at the highest point of its height will be
Physics · Work Power and Energy · MCQ
Q169.From a building two balls A and B are thrown such that A is thrown upwards and B downwards ( both vertically with the same speed ). If vA and vB are their respective velocities on reaching the ground, then
Physics · Motion in A Straight Line · MCQ
Q170.If a body looses half of its velocity on penetrating $3 c m$ in a wooden block, then how much will it penetrate more before coming to rest?
Physics · Work Power and Energy · MCQ
Q171.A lift is moving down with acceleration $a .$ A man in the lift drops a ball inside the lift. The acceleration of the ball as observed by the man in the lift and a man standing stationary on the ground are respectively
Physics · Laws of Motion · MCQ
Q172.When forces $F_{1}, F_{2}, F_{3}$ are acting on a particle of mass $m$ such that $F_{2}$ and $F_{3}$ are mutually perpendicular, then the particle remains stationary. If the force $F_{1}$ is now removed then the acceleration of the…
Physics · Laws of Motion · MCQ
Q173.Two forces are such that the sum of their magnitudes is $18 N$ and their resultant is $12 N$ which is perpendicular to the smaller force. Then the magnitudes of the forces are
Physics · Laws of Motion · MCQ
Q174.A light string passing over a smooth light pulley connects two blocks of masses $m_{1}$ and $m_{2}$ (vertically). If the acceleration of the system is $g /8$ , then the ratio of the masses is
Physics · Laws of Motion · MCQ
Q175.Three identical blocks of masses $m = 2 k g$ are drawn by a force $F = 10.2 N$ with an acceleration of $0.6 m s^{- 2}$ on a frictionless surface, then what is the tension (in $N$ ) in the string between the blocks $B$ and $C$ ? Includes diagram
Physics · Laws of Motion · MCQ
Q176.Speeds of two identical cars are $u$ and $4 u$ at the specific instant. The ratio of the respective distances in which the two cars are stopped from that instant is :
Physics · Motion in A Straight Line · MCQ
Q177.A cylinder of height $20 m$ is completely filled with water. The velocity of efflux of water (in $m s^{- 1}$ ) through a small hole on the side wall of the cylinder near its bottom is
Physics · Properties of Matter · MCQ
Q178.Initial angular velocity of a circular disc of mass $M$ is $ω_{1} .$ Then two small spheres of mass $m$ are attached gently to diametrically opposite points on the edge of the disc. What is the final angular velocity of the disc?
Physics · Rotational Motion · MCQ
Q179.Two identical particles move towards each other with velocity $2 v$ and $v$ respectively. The velocity of center of mass is
Physics · Center of Mass · MCQ
Q180.The minimum velocity (in $m s^{- 1}$ ) with which a car driver must traverse a flat curve of radius 150 m and coefficient of friction $0.6$ to avoid skidding is
Physics · Circular Motion · MCQ
Q181.A solid sphere, a hollow sphere and a ring are released from top of an inclined plane (frictionless) so that they slide down the plane. Then maximum acceleration down the plane is for (no rolling)
Physics · Rotational Motion · MCQ
Q182.A particle of mass $m$ moves along line PC with velocity $v$ as shown. What is the angular momentum of the particle about P? Includes diagram
Physics · Rotational Motion · MCQ
Q183.If suddenly the gravitational force of attraction between Earth and a satellite revolving around it becomes zero, then the satellite will
Physics · Gravitation · MCQ
Q184.Energy required to move a body of mass $m$ from an orbit of radius $2 R$ to $3 R$ is
Physics · Gravitation · MCQ