Question # 1

The focal length of convex lens

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Negative

Positive

small

Large

If the initial velocity of a projectile becomes doubled, the time of fight will be.

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Same

4 times

Double

3 times

The dimensions of work are.

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[MLT-1]

[MLT-2]

[ML2T-2]

[MLT]

Maximum number of components of a vector may be

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Infinite

One

two

three

A bat finding its correct location by sending

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Matter waves

Ultrasonic waves

Infrasonic waves

electromagnetic waves

Half wavelength corresponds to

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0 ^o

90 ^o

180 ^o

360 ^o

Not change in entropy of a system after one complete Carnot cycle is.

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Positive

Negative

Zero

None of these

A wheel of radius 50 cm having an angular speed of a rad /s have linear speed.

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1.5 m/s

3.5 m/s

2.5 m/s

4.5 m/s

If the time period of simple pendulum is 2 seconds its frequency will be.

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1 Hz

0.5 Hz

1.5 Hz

2 Hz

The equations of angular motion hold only in case when the axis of rotation is

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Moving

Fixed

Both a and b

None of these

The maximum velocity necessary to put a satellite into orbit is

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7.1 kms-1

7.3 kms-1

7.9 kms-1

8,9 kms-1

The number 64.350 is rounded off as

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64.4

64.46

63.35

64.36

The speed of light was measured correctly by

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Galileo

Michelson

Newton

Maxwell

The waves used in radar speed trap are

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Longitudinal

Sound wave

Micro waves

Matter waves

The fundamental quanties which form basic for M.K.S system are

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Mass , Length , and time

Mass, acceleration and time

Mass, work and time

Velocity, force and time

When one mirror of a Michelson interferometer is moved a distance of 0.5 mm, 2000 fringes and observed, The wavelength of light used is.

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5000 m

50000 A^o

500 cm

2000 A^o

Which one is renewable source of energy.

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Coal

Uranium

Biomass

Natural gas

Multimode step index fibre is useful for

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Long distances

Short distances

Better quality

Low price

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