JEE Advanced physics questions with solutions

Showing 1–10 of 2484 questions

• Multi-correctmediumGeometrical opticslens and combination lens,silvered lens

  Which of the following silvered lenses kept in air may form real image of a real object.

  Select all that apply

  • Option A

    
  • Option B

    
  • Option C

    
  • Option D

    

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• NumericmediumMagnetic effect of current

  A circular region of radius R=3 m has magnetic field -0.2k̂ T in the upper half and +0.2k̂ T in the lower half. A narrow beam of particles with m=2 g, v=0.3 m/s and q=+1 mC enters along a diameter. A screen is placed as shown. If the separation of impact points is 4X metres, find X.

  

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• MCQmediumCenter of maas , Momentum and Collisionmomentum and conservation of momentum

  A cat of mass m is sitting at rest on the left sled of two identical sleds, each of mass M, on frictionless ice. It jumps to the right with speed u relative to the ground, turns around on the right sled, and returns to the left sled with horizontal speed u relative to the ground. The final speed of the right sled in terms of m, M and u is:

  

  Options

  • Option A

    2mu/(M+m)

  • Option B

    2Mu/(M+m)

  • Option C

    $\mu$/(M+m)

  • Option D

    $\mu$/M

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

  An electron is accelerated through 40 kV before striking the target of an X-ray tube. In one interaction it loses 75% of its kinetic energy in producing a single X-ray photon. Take hc = 1240 eV·nm. If the wavelength of this photon is approximately N pm, find N to the nearest integer.

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• MCQeasyNuclear physicsnuclear fission and fusion ,nuclear reactor

  A typical uranium-235 fission releases more than one neutron. Why is the production of multiple neutrons important for sustaining a nuclear chain reaction?

  Options

  • Option A

    Every emitted neutron is converted into an electron

  • Option B

    Some emitted neutrons can induce fission in additional fissile nuclei

  • Option C

    Multiple neutrons prevent all further fissions

  • Option D

    The emitted neutrons convert uranium directly into hydrogen

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• NumericeasyWave Opticsdiffraction of light

  Monochromatic light of wavelength 600 nm falls normally on a single slit of width 0.20 mm. The diffraction pattern is observed on a screen 2 m away. Find the width of the central maximum in millimetres.

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• MCQmediumThermodynamics

  Figure shows two adiabatic vessels, each containing a mass m of water at different temperatures. The ends of a metal rod of length L, area of cross section A and thermal conductivity K, are inserted in the water as shown in the figure. Find the time taken for the difference between the temperatures in the vessels to become half of the original value. The specific heat capacity of water is s. Neglect the heat capacity of the rod and the container and any loss of heat to the atmosphere. Which of the following gives the correct final result?

  

  Options

  • Option A

    Lms ln 2/(2KA)

  • Option B

    Lms ln 2/(KA)

  • Option C

    2Lms ln 2/(KA)

  • Option D

    Lms/(2KA ln 2)

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• MCQmediumWave Opticsyoung's dubble slit experiments

  In a Young's double-slit experiment, the fringe width is 1.2 mm. What is the distance between the third bright fringe on one side of the central maximum and the second dark fringe on the opposite side?

  Options

  • Option A

    3.6 mm

  • Option B

    4.2 mm

  • Option C

    5.4 mm

  • Option D

    6.0 mm

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• MCQmediumSimple Harmonic Motion

  A particle performs SHM on the x-axis about x=0 with amplitude A and angular frequency ω. At t=0 it is at x=A/2 and moving in +x. If x=A sin(ωt+φ), then φ is:

  Options

  • Option A

    π/6

  • Option B

    π/3

  • Option C

    2π/3

  • Option D

    5π/6

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• NumericeasyWave Motionstationary wave of string and sonometer

  A stationary wave on a string has wavelength 0.80 m. If the distance between two consecutive displacement nodes is N cm, find N.

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