6 April 2023 physics questions with solutions

Showing 1–10 of 58 questions

• MCQmediumElectrostaticpotential energy and electric potential

  For a uniformly charged thin spherical shell, the electric potential (V) radially away from the entre (O) of shell can be graphically represented as -

  

  Options

  • Option A

    
  • Option B

    
  • Option C

    
  • Option D

    

  Check answerShow answer

  JEE Mains6 April 2023Shift 1Morning Shift

  Open question & full solution →
• MCQeasyThermodynamicsheat transfer due to radiation

  A body cools in 7 minutes from 60°C to 40°C. The temperature of the surroundings is 10°C. The temperature of the body after the next 7 minutes is:

  Options

  • Option A

    30°C

  • Option B

    34°C

  • Option C

    32°C

  • Option D

    28°C

  Check answerShow answer

  JEE Mains6 April 2023Shift 2Evening Shift

  Open question & full solution →
• MCQmediumPhotoelectric effect and dual nature of matterdebroglie duel nature of light

  The kinetic energy of an electron, α-particle and a proton are given as 4 K, 2 K and K respectively. The de-Broglie wavelength associated with electron (λₑ), α-particle (λₐ) and the proton (λₚ) are as follows:

  Options

  • Option A

    λₐ > λₚ > λₑ

  • Option B

    λₐ = λₚ > λₑ

  • Option C

    λₐ = λₚ < λₑ

  • Option D

    λₐ < λₚ < λₑ

  Check answerShow answer

  JEE Mains6 April 2023Shift 1Morning Shift

  Open question & full solution →
• MCQeasyThermodynamicskinetic therory of gaseous

  The temperature of an ideal gas is increased from 200 K to 800 K. If r.m.s. speed of gas at 200 K is v₀. Then, r.m.s. speed of the gas at 800 K will be: v₀

  Options

  • Option A

    4v 0

  • Option B

    2v 0

  • Option C

    v₀

  • Option D

    4

  Check answerShow answer

  JEE Mains6 April 2023Shift 2Evening Shift

  Open question & full solution →
• MCQmediumAtomic Structure and X-raysatomic structre and bohr atomic model

  The energy levels of an hydrogen atom are shown below. The transition corresponding to emission of shortest wavelength is

  

  Options

  • Option A

    A

  • Option B

    D

  • Option C

    C

  • Option D

    B

  Check answerShow answer

  JEE Mains6 April 2023Shift 1Morning Shift

  Open question & full solution →
• MCQmediumKinematics Part-1 (one dimension)Motion under constant acceleration

  A particle starts with an initial velocity of 10.0 m s⁻¹ along x-direction and accelerates uniformly at the rate of 2.0 m s⁻². The time taken by the particle to reach the velocity of 60.0 m s⁻¹ is __________.

  Options

  • Option A

    3s

  • Option B

    6s

  • Option C

    25s

  • Option D

    30s

  Check answerShow answer

  JEE Mains6 April 2023Shift 2Evening Shift

  Open question & full solution →
• MCQmediumElectromagnetic Inductionfaradays law and question based on it

  The induced emf can be produced in a coil by
  A. moving the coil with uniform speed inside uniform magnetic field
  B. moving the coil with non uniform speed inside uniform magnetic field
  C. rotating the coil inside the uniform magnetic field
  D. changing the area of the coil inside the uniform magnetic field Choose the correct answer from the options given below:

  Options

  • Option A

    B and D only

  • Option B

    C and D only

  • Option C

    B and C only

  • Option D

    A and C only

  Check answerShow answer

  JEE Mains6 April 2023Shift 1Morning Shift

  Open question & full solution →
• MCQeasyMagnetic effect of currentampere's law and its application

  A long straight wire of circular cross-section (radius a) is carrying steady current I. The current I is uniformly distributed across this cross-section. The magnetic field is

  Options

  • Option A

    zero in the region r < a and inversely proportional to r in the region r > a

  • Option B

    inversely proportional to r in the region r < a and uniform throughout in the region r > a

  • Option C

    directly proportional to r in the region r < a and inversely proportional to r in the region r > a

  • Option D

    uniform in the region r < a and inversely proportional to distance r from the axis, in the region r > a

  Check answerShow answer

  JEE Mains6 April 2023Shift 1Morning Shift

  Open question & full solution →
• NumericmediumWave OpticsYoung's Double Slit Experiment

  A beam of light consisting of wavelengths 7000 Å and 5500 Å is used in Young's double slit experiment. Slit separation is 2.5 mm and screen distance is 150 cm. The least distance from the central fringe where bright fringes of both wavelengths coincide is n × 10⁻⁵ m. Find n.

  Your answer

  Check answerShow answer

  JEE Mains6 April 2023Shift 2Evening Shift

  Open question & full solution →
• MCQeasyGravitationAcceleration Due to Gravity & Escape Velocity

  The weight of a body on the surface of the earth is 100 N. The gravitational force on it when taken at a height, from the surface of earth, equal to one-fourth the radius of the earth is:

  Options

  • Option A

    64 N

  • Option B

    25 N

  • Option C

    100 N

  • Option D

    50 N

  Check answerShow answer

  JEE Mains6 April 2023Shift 2Evening Shift

  Open question & full solution →