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NAT I Medical Physics MCQs With Answers

Question # 1

Velocity of sound in a diatomic as is 300 m/sec what is its rms velocity

Choose an answer

400 m/sec

40 m/sec

430 m/sec

300 m/sec

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Question # 2

When boron is added as an impurity to silicon the resulting material is

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n type conductor

n type semiconductor

p-type conductor

p-type semiconductor

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Question # 3

Which of the following four statements is false?

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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 # 4

A 220 V, 50 Hz, AC source is connected to an inductance of 0.2.H and a resistance of 20 ohm in series What is the current in the circuit?

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10 A

5 A

33.3 A

3.33 A

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Question # 5

The magnetic moment of a circular coil carrying current is

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Directly proportional to the length of the wire in the coil

Inversely proportional to the length of the wire in the coil

Directly proportional to the square of the length of the wire in the coil

Inversely proportional to the square of the length of the wire in the coil

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Question # 6

Center of mass is a point

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Which is geometric center of a body

From which distance of particles are same

Where the whole mass of the body is supposed to be centered

Which is the origin of reference frame

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Question # 7

A moving charge will gain energy due to the application of

Choose an answer

Electric field

Magnetic

Both of these

None of these

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Question # 8

Which of the following sources give discrete emission spectrum?

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Incandescent electric bulb

Sun

Mercury vapour lamp

Candle

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Question # 9

The modulus of rigidity of a liquid is

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Zero

Infinity

A value not one of those mentioned above

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