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NAT I Medical Physics MCQs With Answers

Question # 1

Two sources of sound are said to be coherent if

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They produce sounds of equal intensity

They produce sounds of equal frequency

They produce sound waves vibrating with the same phase

They produce sound waves with zero or constant phase difference all instant of time

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Question # 2

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

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Stress

Strain

Velocity

Surface tension

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Question # 3

Absolute temperature can be calculated by

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Mean square velocity

Motion of the molecule

Both (A) and (B)

None of these

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Question # 4

A voltmeter has resistance of 2000 ohms and it can measure up to 2V. If we want to increase its range to 10V then required resistance in series will be

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2000 Ω

4000 Ω

6000 Ω

8000 Ω

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Question # 5

How does the Young's modulus vary with the increase of temperature?

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Decrease

Increase

Remains constant

First increases and then decreases

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Question # 6

There are discrete energy levels in atoms. It was first experimentally demonstrated by

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Rutherford's experiment

Frank Hertz experiment

Marsden's experiment

Sommerfield experiment

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Question # 7

The sieman is the SI unit of

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Resistance

Specific Resistance

Conductance

Inductance

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Question # 8

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

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Question # 9

Ball pen function on the principle of

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Viscosity

Boyle's law

Gravitational force

Surface tension

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