JEE Advanced physics questions with solutions

Showing 1–10 of 1474 questions

• MCQmediumWave Motionsound wave

  A plane sinusoidal sound wave has particle-displacement amplitude sₘ, angular frequency ω, speed v and equilibrium density ρ₀. Which expression gives the pressure amplitude Δpₘ?

  Options

  • Option A

    Δpₘ = ρ₀vsₘ

  • Option B

    Δpₘ = ρ₀vωsₘ

  • Option C

    Δpₘ = ρ₀ωsₘ/v

  • Option D

    Δpₘ = ρ₀v²ωsₘ

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• MCQeasyCircular Motionrelative angular velocity and radius of curvature

  Particles A and B move about the same centre with signed angular velocities $\omega_{A}$ = +5 rad/s and $\omega_{B}$= -3 rad/s. The angular velocity of A relative to B is:

  Options

  • Option A

    2 rad/s

  • Option B

    8 rad/s

  • Option C

    -8 rad/s

  • Option D

    -2 rad/s

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• A/RmediumFluid Mechanicspascal law and buoyant force

  Choose the correct option for the following Assertion (A) and Reason (R).

  Assertion

  A submarine lying tightly against a flat sea bed may be difficult to lift merely by increasing its buoyancy.

  Reason

  If water cannot reach the lower surface of the submarine, the upward hydrostatic pressure force on that surface is absent or greatly reduced.

  Options

  • Option A

    Both A and R are true and R is the correct explanation of A.

  • Option B

    Both A and R are true but R is NOT the correct explanation of A.

  • Option C

    A is true but R is false.

  • Option D

    A is false but R is true.

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• MCQmediumAtomic Structure and X-raysx-rays and its types

  For the same target element, compare the energies of its Kα, Kβ and Kγ characteristic X-ray photons. Which ordering is correct in the simple shell-transition picture?

  Options

  • Option A

    E(Kα) > E(Kβ) > E(Kγ)

  • Option B

    E(Kγ) > E(Kβ) > E(Kα)

  • Option C

    E(Kα) = E(Kβ) = E(Kγ)

  • Option D

    E(Kβ) > E(Kγ) > E(Kα)

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• MCQmediumFluid Mechanicsquestion based on variation of pressure

  A U-tube of uniform cross-section contains a liquid and is accelerated horizontally with acceleration a. The horizontal separation between the two vertical arms is l. The difference in liquid levels is:

  Options

  • Option A

    al/g

  • Option B

    gl/a

  • Option C

    a²l/g²

  • Option D

    l√(g²+a²)/g

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• Multi-correctmediumCircular Motioncentripital force and centrifugal force

  A bead moves in a smooth radial groove of a horizontal disc rotating with constant angular speed ω. Which statements are correct?

  Select all that apply

  • Option A

    d²r/dt² = ω²r

  • Option B

    The groove reaction magnitude is 2mω|dr/dt|

  • Option C

    If dr/dt=0 at an instant, the groove reaction is zero at that instant

  • Option D

    The bead's kinetic energy must remain constant

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• MCQmediumWave Opticsyoung's dubble slit experiments

  In a Young's double-slit experiment, the two slits individually produce equal intensity I. Point P is on the positive-y side between the third dark fringe and the third bright fringe. If the resultant intensity at P is I, what is the position of P in terms of fringe width β?

  Options

  • Option A

    5β ÷ 2

  • Option B

    8β ÷ 3

  • Option C

    17β ÷ 6

  • Option D

    11β ÷ 4

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• Multi-correcteasyWave Motionsound wave

  Which statements correctly describe compression and rarefaction in a small-amplitude sound wave?

  Select all that apply

  • Option A

    Compression corresponds to Δp > 0.

  • Option B

    Compression corresponds to Δρ > 0.

  • Option C

    Rarefaction corresponds to absolute pressure below the equilibrium pressure.

  • Option D

    Pressure and density reach their respective maxima at the same phase.

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• Multi-correcteasyWave Opticsyoung's dubble slit experiments

  Which of the following changes, made one at a time in a Young's double-slit experiment, increase the fringe width?

  Select all that apply

  • Option A

    Increasing the wavelength

  • Option B

    Increasing the screen distance

  • Option C

    Increasing the slit separation

  • Option D

    Immersing the complete arrangement in a transparent medium of refractive index greater than 1

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• MCQmediumGravitationlaw of gravitation ,gravitational field intensity ,gravitational potential and potential energy

  Two particles of masses m and 4m are fixed at x=0 and x=5a. At the point between them where the net gravitational field is zero, the gravitational potential is:

  Options

  • Option A

    -9Gm/(5a)

  • Option B

    -3Gm/(2a)

  • Option C

    -2Gm/a

  • Option D

    -5Gm/(2a)

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