Question # 1

Surface tension of water is due to

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Inter molecular attraction

Intermolecular spaces

Inter molecular repulsion

None of above

In a simple harmonic motion the kinetic energy (KE) and the potential energy (PE), are such that throughout the motion

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KE remains constant

PE remains constant

KE/PE is constant

KE + PE remains constant

According to Stoke's law drag force depends on

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Initial velocity

Final velocity

Terminal velocity

Instantaneous velocity

The dot product of two vectors is negative when

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They are parallel vectors

They are anti-parallel vectors

They are perpendicular vectors

None of the above is correct

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

The modulus of rigidity of a liquid is

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Zero

1

Infinity

A value not one of those mentioned above

The velocity of falling raindrops attains limited value because of

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Up thrust of air

VIscous force exerted by air

Surface tension effect

Air currents atmosphere

A pendulum clock set to give correct time in Karachi is taken to Quetta it would give correct time if

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The mass of the pendulum is increased

The mass of the pendulum is decreased

The length of the pendulum os increased

The length of the pendulum is decreased

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

The average binding energy of a nucleon inside an atomic nucleus is about

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8 MeV

8 eV

8 Joules

8 ergs

Radio waves of constant amplitude can be generated with

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Rectifier

Filter

FET

Oscillator

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NAT I Computer Science Physics MCQs With Answers

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