Question # 1

The motion without consideration of its cause is studied in:

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Kinematics

Mechanics

Statics

Modern Physics

Huygen's wave theory of light cannot explain

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Diffraction

Interference

Polarization

Photoelectric effect

The dimensional formula for the modulus of elasticity is same as that for.

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Stress

Strain

Velocity

Surface tension

A man pushes a wall but fails to displace it. He does:

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Negative work

Maximum positive work

Positive work but not maximum

No work

Which of the following is the only vector quantity

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Temperature

Energy

Power

Momentum

Which of the following particle would experience the largest magnetic force when projected with the same velocity perpendicular to a magnetic field?

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Proton

Electron

He⁺

Li⁺

The frequency of the incident light falling on a photosensitive metal plate is doubled the kinetic energy of the emitted photoelectrons is

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Double the earlier value

Unchanged

More than doubled

Less than doubled

In a capacitive circuit

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Current leads voltage by phase of π/2

Voltage leads current by phase of π/2

Current and voltage are in same phase

Sometime current and sometime voltage leads

According to the Hooke's law the force required to change the length of a wire by '1' is proportional to

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1^-2

1^-1

1

1²

The twinkling of stars is due to

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The fact that stars do not emit light continuously

The refractive index of the earth's atmosphere fluctuate

Intermittent absorption of star light by its own atmosphere

None of them

Which quantity is increased in step-down transformer?

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Current

Voltage

Power

Frequency

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NAT I Computer Science Physics MCQs With Answers

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