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NAT I Medical Physics MCQs With Answers

Question # 1

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 # 2

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 # 3

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 # 4

The fundamental unit which has same power in the dimensional formula of surface tension and viscosity is:

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Mass

Length

Time

None

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Question # 5

A train of 150 m length is going towards north direction at a speed of 10 ms^-1 A parrot flies at a speed of 5 ms^-1 towards south direction parallel to the railway track,The time taken by the parrot to cross the train is equal to

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12 s

8 s

15 s

10 s

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Question # 6

A p-n junction has a thickness of the order of

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1 cm

1 mm

10^-6 cm

10^-12 cm

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Question # 7

How much water a pump of 2kW can raise in one minute to a height of 10 m. take g = 10 m/s²?

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1000 liters

1200 liters

100 liters

2000 liters

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Question # 8

A 50-volt battery is connected across 10-ohm resistor.The current is 4.5 A.The internal resistance of the battery is

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Zero

0.5 Ω

1.1 Ω

5.0 Ω

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Question # 9

A capacitor acts as an infinite resistance for

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Both AC and DC

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