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NAT I Medical Physics MCQs With Answers

Question # 1

The distance between node and anti-node is

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λ/2

λ/4

2λ

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Question # 2

One cannot see through fog because

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Fog absorbs light

The refractive index of fog is infinity

Light suffers total reflection at the droplet in a fog

Light is scattered by the droplets in fog

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Question # 3

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 # 4

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:

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40 km/h

48 km/h

50 km/h

60 km/h

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Question # 5

A particle is moving in a uniform magnetic field then

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Its momentum changes but total energy remains the same

Both momentum and total energy remains the same

Both changes

Total energy change but momentum remains

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Question # 6

The minimum wavelength of the X-rays produced by electrons accelerated through a potential difference of V volts is directly proportional to

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√V

V²

1/√V

1/V

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Question # 7

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 # 8

In a Millikan's oil drop experiment the charge on an oil drop is calculated to be 6.35 x 10-19 C. The number of excess electrons on the drop is

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3.9

4.2

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Question # 9

The sieman is the SI unit of

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Resistance

Specific Resistance

Conductance

Inductance

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