Question # 1

Relation between pressure (P) and energy (E) of a gas is

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P = 2/3 E

P = 1/3 E

P = 3/2 E

P = 3 E

Huygen's wave theory of light cannot explain

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Diffraction

Interference

Polarization

Photoelectric effect

When n-type of semiconductor is heated

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Number of electrons increases while that of holes decreases

Number of holes increases while that of electrons decreases

Number of electrons and holes remains same

Number of electrons and holes increases equally

The direction of induced current is such that it opposes the very cause that has produced it This is the law of

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Lenz

Faraday

Kirchoff

Fleming

What will be the ratio of the distance moved by a freely falling body from rest in 4^th and 5^th seconds of journey?

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4 : 5

7 : 9

16 : 25

1 : 1

Radio waves of constant amplitude can be generated with

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Rectifier

Filter

FET

Oscillator

If 2.2 kilowatt power is transmitted through a 10 ohm line at 22000 volt, the power loss in he form of heat will be

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0.1 watt

1 watt

10 watt

100 watt

What will be the duration of the day and night (in hour) if the diameter of the earth is suddenly reduced to half its original value the mass remaining constant?

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12

6

3

2

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

The unit of inductance is equivalent to

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V x s/A

V x A/s

A x s/v

V/A x s

In which case dose the potential energy decreases?

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On compressing a spring

On stretching s spring

One moving a body against gravitational force

One the rising of an air bubble in water

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NAT I Engineering Physics MCQs With Answers

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