10 April 2023 physics questions with solutions

Showing 1–10 of 58 questions

• IntegermediumElectrostaticElectric field intensity

  An electron revolves in a circular path around an infinite line charge of linear charge density 2 × 10⁻⁸ C m⁻¹. The electron mass is 9 × 10⁻³¹ kg. Its speed is ______ × 10⁶ m s⁻¹.

  

  Your answer

  Check answerShow answer

  JEE Mains10 April 2023Shift 2Evening Shift

  Open question & full solution →
• MCQmediumMagnetic effect of currentmagnetic moment and torque on current carring loop in magnetic field

  Given below are two statements:

  Statement I: If the number of turns in the coil of a moving-coil galvanometer is doubled, then the current sensitivity becomes double.

  Statement II: Increasing current sensitivity of a moving-coil galvanometer only by increasing the number of turns in the coil will also increase its voltage sensitivity in the same ratio. Choose the correct answer.

  Options

  • Option A

    Both Statement I and Statement II are true

  • Option B

    Both Statement I and Statement II are false

  • Option C

    Statement I is true but Statement II is false

  • Option D

    Statement I is false but Statement II is true

  Check answerShow answer

  JEE Mains10 April 2023Shift 1Morning Shift

  Open question & full solution →
• MCQmediumCapacitorequivalent capacitance of circuit

  A parallel-plate capacitor has plate separation d and capacitance C₁ with air between the plates. A metal sheet of thickness 2d/3 and the same area as the plates is inserted without touching either plate. The new capacitance is C₂. The ratio C₂:C₁ is:

  Options

  • Option A

    4 : 1

  • Option B

    3 : 1

  • Option C

    2 : 1

  • Option D

    1 : 1

  Check answerShow answer

  JEE Mains10 April 2023Shift 2Evening Shift

  Open question & full solution →
• IntegereasyMagnetism and matterproperties of magnetic substance

  A solenoid of length 15 cm has 60 turns. Find the current required to produce a magnetic field intensity H = 2.4 × 10³ A m⁻¹ for demagnetizing a bar magnet.

  Your answer

  Check answerShow answer

  JEE Mains10 April 2023Shift 1Morning Shift

  Open question & full solution →
• MCQeasyKinematics Part-1 (one dimension)Distance,Displacement ,Avg speed and Avg velocity

  A person travels distance x with speed v₁ and then another equal distance x with speed v₂ in the same direction. If the average velocity is v, the correct relation is:

  Options

  • Option A

    v = v₁ + v₂

  • Option B

    1/v = 1/v₁ + 1/v₂

  • Option C

    2/v = 1/v₁ + 1/v₂

  • Option D

    v = (v₁ + v₂)/2

  Check answerShow answer

  JEE Mains10 April 2023Shift 2Evening Shift

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

  A bar magnet is released from rest along the axis of a very long vertical copper tube. After some time the magnet will:

  Options

  • Option A

    oscillate inside the tube

  • Option B

    move downward with acceleration greater than g

  • Option C

    move downward with almost constant speed

  • Option D

    move downward with acceleration equal to g

  Check answerShow answer

  JEE Mains10 April 2023Shift 2Evening Shift

  Open question & full solution →
• IntegermediumWave Motiongeneral equation of wave

  A transverse harmonic wave on a string is y(x,t) = 5 sin(6t + 0.003x), where x and y are in cm and t is in seconds. The wave speed is ______ m s⁻¹.

  Your answer

  Check answerShow answer

  JEE Mains10 April 2023Shift 1Morning Shift

  Open question & full solution →
• MCQeasyThermodynamicsfirst law of thermodynamics

  A gas is compressed adiabatically. Which statement is NOT true?

  Options

  • Option A

    There is no change in internal energy

  • Option B

    The temperature of the gas increases

  • Option C

    The change in internal energy equals the work done on the gas

  • Option D

    No heat is supplied to the system

  Check answerShow answer

  JEE Mains10 April 2023Shift 2Evening Shift

  Open question & full solution →
• MCQmediumPhotoelectric effect and dual nature of matterquestion based on photoelectric effect

  The stopping-potential versus frequency graph for a metal is shown. The work function of the metal is:

  

  Options

  • Option A

    2.07 eV

  • Option B

    18.6 eV

  • Option C

    2.98 eV

  • Option D

    1.36 eV

  Check answerShow answer

  JEE Mains10 April 2023Shift 2Evening Shift

  Open question & full solution →
• MCQmediumCurrent electricityEquivalent Resistance & Networks

  The equivalent resistance between points a and b in the circuit shown is:

  

  Options

  • Option A

    20 Ω

  • Option B

    16 Ω

  • Option C

    24 Ω

  • Option D

    3.2 Ω

  Check answerShow answer

  JEE Mains10 April 2023Shift 1Morning Shift

  Open question & full solution →