15 April 2023 Morning Shift physics questions with solutions

Showing 1–10 of 29 questions

• MCQmediumCurrent electricityelectric current ,current density and resistance

  Statement I: Equivalent resistance of resistors in series is smaller than the least resistance in the combination.

  Statement II: Resistivity of a material is independent of temperature. Choose the correct option.

  Options

  • Option A

    Both statements are true

  • Option B

    Both statements are false

  • Option C

    Statement I is false but Statement II is true

  • Option D

    Statement I is true but Statement II is false

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• MCQmediumNewtons law of motion and Frictionnewton second law and problem based on it

  The position vector of a particle is r = (10t î + 15t² ĵ + 7 k̂) m. The direction of the net force is:

  Options

  • Option A

    Positive z-axis

  • Option B

    In x–y plane

  • Option C

    Positive y-axis

  • Option D

    Positive x-axis

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• IntegermediumWork , Power and Energyquestion based on work

  A 10 kg block moves along the x-axis under a force F = 5x N. Find the work done by the force as x changes from 2 m to 4 m, in joules.

  Your answer

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• MCQmediumsemiconductorP-N jucntion and diode in reverse and forward bias

  In the shown diode-resistor circuit, find the current through the 10 V battery.

  

  Options

  • Option A

    1 A

  • Option B

    1.5 A

  • Option C

    2 A

  • Option D

    2.5 A

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• IntegermediumGeometrical opticsprism and thin prism

  A transparent liquid of refractive index √2 fills an equilateral hollow prism. Find the angle of minimum deviation, in degrees.

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• IntegermediumCurrent electricitycircuit theory

  A four-resistor network is connected to a 9 V battery as shown. Find the magnitude of potential difference between points A and B, in volts.

  

  Your answer

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• MCQmediumGravitationacceleration due to gravity and escape velocity

  A body is released from rest at a height equal to Earth's radius R above the surface. Its speed on reaching Earth's surface is:

  Options

  • Option A

    √(gR)

  • Option B

    √(gR/2)

  • Option C

    √(4gR)

  • Option D

    √(2gR)

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• MCQmediumKinematics Part-1 (one dimension)Instantaneous speed and instantaneous velocity

  The position of a particle is x = (5t² - 4t + 5) m. The magnitude of its velocity at t = 2 s is:

  Options

  • Option A

    10 m s⁻¹

  • Option B

    6 m s⁻¹

  • Option C

    16 m s⁻¹

  • Option D

    14 m s⁻¹

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• MCQmediumProperties of solid and fluidpropertes of solid stress ,strain and modulus of elasticity

  A wire of length L and radius r extends by l under force f. Another wire of the same material has length 2L and radius 2r and is pulled by force 2f. Its extension is:

  Options

  • Option A

    l/2

  • Option B

    4l

  • Option C

    l

  • Option D

    2l

  Check answerShow answer

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• MCQmediumElectromagnetic Inductionself induction and L-R circuit

  A 12 V battery is connected to a coil of resistance 6 Ω. The steady current is interrupted in 1 ms and the induced emf across the coil is 20 V. The inductance is:

  Options

  • Option A

    8 mH

  • Option B

    10 mH

  • Option C

    12 mH

  • Option D

    5 mH

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