Question # 1

An ideal reversible heat engine has

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100% efficiency

Highest efficiency

80%

90%

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

100 radians are equal to.

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57.3^o

75.3^o

573^o

5730^o

A force of 100 N makes an angle of 60o with Y- Axis, its horizontal component is.

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50 N

60 N

70.7 N

86.6 N

Number of seconds in a day is

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9000 sec

3600 sec

86400 sec

43200 sec

The terminal velocity can be obtained by using

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Newton's law

Stock's law

Guass's law

None of these

The portion of the wave above mean level is called.

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Node

Antinode

Crest

Trough

The ability of reveal the minor details of an object under examination is called.

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Resolving power

Magnification

Scattering

Reflection

All point of the rigid body rotating about a fixed axis do not have same.

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Angular acceleration

Angular speed

speed

Angular displacement

Which one is non renewable source of energy.

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Hydro electric

Bio mass

Tides

Oil

The word Fluid means

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To rise

To fall

To flow

To oppose

When a particle is moving along a circular path its projection along the diameter executes

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Linear motion

Vibratory motion

Rotatory motion

SHM

A man weight 1000 N in a stationary lift. If the lift moves up with an acceleration of 10 ms-2. then its weight becomes.

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1000 N

2000 N

3000 N

0 N

Rate of change of velocity is called

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Speed

Acceleration

Displacement

Torque

Which one is true for isothermal process.

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Q = 0

W = 0

Q = W(D) Delta U = 0

None of these

A mass of 1 kg is freely falling. The force of gravity is.

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1 N

9.8 N

0.5 N

Zero

The study of fluid dynamics is

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Easy

Complicated

Impossible

None of these

Light waves emitted from a source spread in

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Specific direction

All direction

Upward direction

None of these

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