Question # 1

Weight of a 60 kg man in moving elevator with constant acceleration of 1/2 f

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Zero

300 N

600 N

200 N

In young's double slit experiment for the interference the central region will be

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Dark

Bright

Coloured

None of these

The dimensional unit of impulse is.

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[MLT]

[MLT-1]

[ML-1T-1]

[M-1L-1T-1]

Law of physics expressed in term of

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Base quantites

Derived quantities

a and b

None of these

In thermodynamics system internal energy decrease by 100 J and 100 J of work done on the system then heat lost will be.

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Zero

100 J

200 J

-200 J

If a stretched string 4 m long and it has 4 loops of stationary waves, then the wave length is.

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1m

2 m

3 m

4 m

The largest satellite system is managed by

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116 countries

126 countries

136 countries

140 countries

A man of 5000 kg moves with an acceralation of 1 ms-2 force acting on it is.

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5 N

500 N

50 N

5000 N

Speed of sound in aluminum at 20 ^oC is.

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3600 m/s

5100 m/s

5130 m/s

3500 m/s

The weight of the body at the centre of earth is

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Maximum

Minimum

Zero

Infinite

Biomas is a potential source of

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Renewable energy

Non renewable energy

Botha a and b

Tidal energy

For angular momentum of system to remain constant, external torque should be.

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Small

Large

Zero

None

A cycle of petrol engine undergoes

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Two process

Three process

Four process

single process

Which one of the following is into directed along the axis of rotation

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Angular acceleration

Angular momentum

Centripetal acceleration

Angular displacement

A finite volume of gas consists of

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Small no. of molecules

Large no. of molecule

Average no. of molecule

None of these

The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is.

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0 ^oC

0 K

0 ^oF

100 K

Sound wave can not be

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Reflected

Refracted

Diffracted

Polarized

Force acting on the piston to move outward is.

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Compressive stoke

Power stoke

All stoke

Exhaust stoke

The components of a vector which are perpendicular to each other are called

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Horizontal components

Vertical components

Rectangular components

All of these

Multimode step index fibre is useful for

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Long distances

Short distances

Better quality

Low price

The term in Bernoulli's equation has the same unit as

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Work

Volume

Pressure

Force

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