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NAT I Medical Physics MCQs With Answers

Question # 1

A motorist travels A to B at a speed at 40 km/h and returns at speed of 60 km/h. His average speed will be:

Choose an answer

40 km/h

48 km/h

50 km/h

60 km/h

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Question # 2

Which of the following four statements is false?

Choose an answer

A body can have zero velocity and still be accelerated

A body can have a constant velocity and still have a varying speed

A body can have a constant speed and still have a varying velocity

The direction of the velocity of a acceleration is constant

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Question # 3

Angular momentum is

Choose an answer

Vector (axial)

Vector (polar)

Scalar

None of these

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Question # 4

The velocity v of a particle at time t is given by:

v = at + b / t + c

The dimensional formula of a,b and c care respectively:

Choose an answer

L² ; T and LT²

LT² ; LT and L

LT^-2; L and T

L;LT and T^-2

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Question # 5

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

Choose an answer

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

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Question # 6

Which of the following is not thermo dynamical function?

Choose an answer

Enthalpy

Work done

Gibb's energy

Internal energy

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Question # 7

If the amplitude of sound is doubled and the frequency reduced to one-fourth the intensity of sound at the same point will be

Choose an answer

Increasing by a factor of 2

Decreasing by a factor of 2

Decreasing by a factor of 4

Unchanged

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Question # 8

The modulus of rigidity of a liquid is

Choose an answer

Zero

Infinity

A value not one of those mentioned above

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Question # 9

Which of the modulus of elasticity is involved in compressing a rod to decrease its length?

Choose an answer

Young's modulus

Bulk modulus

Modulus of rigidity

None of the above

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