Question # 1

One revolution is equal to.

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90^o

180^o

360^o

270^o

The process of confining the beam of light to vibrate in one plane is called.

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Interference

Diffraction

Polarization

Total internal refraction

_______ is bio fuel

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Water

Petrol

Ethanol

Oil

Time period of simple pendulum depends upon

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Mass of pendulum

Weight of pendulum

Length of pendulum

Shape of pendulum

In Michelson's experiment the relation used to find the speed of light is

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16 fc

1/16 fd

16 fd

16/fd

A stationary waves is established din a string which vibrates in four segments at a frequency of 120 Hz, Its fundamental frequency is.

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15 Hz

30 HZ

60 Hz

480 Hz

Which quantity of the following is dimensionless.

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Angular velocity

Centripetal force

Angular acceleration

Angular displacement

A layer over the central core of the jacke is called.

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Jacket

Plastic

Cladding

Rubber

The speed of light was measured correctly by

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Galileo

Michelson

Newton

Maxwell

When temperature of source and sink of a heat engine becomes equal then the entropy change will be.

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zero

Minimum

Maximum

Negative

The dimensions of angular velocity are

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[LT-1]

[LT-2]

[T-1]

[L-1T-1]

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Apparent weight of a man is in upward accelerated lift will

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Increases

Decreases

Remain same

Increases then decrees

The wavelength of fundamental note in one end closed pipe in term of length 'l' of pipe is.

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4 l

2l

l

1/4 l

Average acceleration is a

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Scalar quantity

Vector quantity

(-) ve quantity

None of these

How many orbiting satellites from the Global positing system.

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3

12

24

22

Second pendulum has a time period

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1 sec

3 sec

2 sec

4 sec

The optical fibre is covered for protection by

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Glass jacket

Plastic jacket

Steel jacket

Diamond jacket

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