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NAT I Medical Physics MCQs With Answers

Question # 1

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

1²

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Question # 2

Two forces of 10N and 15N are acting simultaneously on an object in the same direction. Their resultant is

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Zero

25N

150N

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Question # 3

In which case application of angular velocity is useful?

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When a body is rotating

When velocity of body is in a straight line

When velocity is in a straight line

None of these

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Question # 4

Two electric bulbs of 200 W and 100 W have same voltage.If R1 and R2 be their resistance respectively then

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R₁ = 2R₂

R₂ = 2R₁

R₂ = 4R₁

R₁ = 4R₂

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Question # 5

The acceleration 'a' in m/s² of a particle is given by a = 3 t² + 2 t + 2,where 't' is the time if the particle starts out with a velocity v = 2 m/s at t = 0, then the velocity at the end of 2 second is

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12 m/s

24 m/s

18 m/s

36 m/s

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Question # 6

With the propagation of a longitudinal wave through a material medium the quantities transmitted in the propagation direction are

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Energy momentum and mass

Energy

Energy and mass

Energy and linear momentum

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Question # 7

At a certain instant a stationary transverse wave is found to have maximum kinetic energy the appearance of string of that instant is:

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Sinusoidal shape with amplitude A/3

Sinusoidal shape with amplitude A/2

Sinusoidal shape with amplitude A

Straight line

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Question # 8

A capacitor acts as an infinite resistance for

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Both AC and DC

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Question # 9

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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