Question # 1

The value of angular momentum is maximum when 0 is

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90^o

60^o

75^o

45^o

When ever the path difference between the waves is integral multiple of half the wavelength, interference will be

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Constructive

Destructive

(-)ve

(+) ve

A ball is thrown up vertically, it takes 3 sec to reach maximum height. Its initial velocity is.

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10 ms-1

12.2 ms-1

15 ms-1

29.4 ms-1

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

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Positive

Negative

Zero

None of these

An ideal reversible heat engine has

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100% efficiency

Highest efficiency

80%

90%

The motion of gas molecules is

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In the same direction

Random

Walls of container

Opposite to each other

Rate of change of displacement is called

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Speed

Velocity

Kinetic energy

None of these

At what speed the momentum and kinetic energy of a body having the same.

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1 ms-1

2 ms-1

4 ms-1

8 ms-1

In the thermodynamics process , the equation W = -delta U represents.

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Isothermal expension

Isothermal compression

Adiabatic expansion

Adiabatic compression

For working of heat engine, there must be.

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A source

A sink

either of these

Both of these

In branch of physics which deals with the nuclear particls such as neurtons, protons adn nuclear structur is called

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Nuclear Physics

Solid state Physics

Particle Physics

Plasma physics

Pi radian is equal to.

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0^o

90^o

180^o

57.3^o

According to Hygen's principle, each point on a wave front acts as a source of.

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Secondary wavelet

New wave front

Sound

Primary wavelet

The diver spins faster when moment of inertia becomes.

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smaller

Greater

Constant

Zero

The optical fiber is covered for protection by a

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Glass Jacket

Plastic Jacket

Copper Jacket

Aluminum Jacket

The maximum range of projectile is 100 km, Take 9=10 ms-2, the initial velocity of the projectile will be.

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1000 kms-1

1 kms-1

10 kms-1

100 kms-1

When the rocket moves away from the earth, the work against gravity

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Remains constant

Varies directly with distance

Varies inversely with distance

Varies inversely with square of distance

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

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Work

Volume

Pressure

Force

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