Question # 1

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

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Positive

Negative

Zero

None of these

A typical rocket consumes fuel about

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40000 Kgs-1

30000 Kgs-1

20000 Kg s-1

10000 Kgs-1

Entropy of measure of.

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Internal energy of system

Order of system

Disorder of system

Potential energy of system

Force acting on the piston to move outward is.

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Compressive stoke

Power stoke

All stoke

Exhaust stoke

The action and reaction never act on

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Same body

Two bodies

many bodies

All of these

If a body revolves under centripetal force its angular acceleration is

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Non zero

Variable

Increasing

Zero

10 N and 20 N are acting on a body of mass 2 kg the minimum acceleration will be.

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10 ms-2

20 ms-2

60 ms-2

5 ms-2

Moment of inertia is measure din

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Kg m2

Kg m-2

Rad s-1

Joule second

Work is negative when angle between F and d is

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45^o

₀^o

90^o

180^o

The light emitted from light emitting diode has wave length.

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1.1 micro meter

1.3 micro meter

1.5 micro meter

1.7 micro meter

The state of human blood flow can be found by using.

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Newton's formula of speed of sound

Interference of sound

Phenomena of beats

Doppler's effect of sound

The unit of work in base unit is

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Kg m-1 sec-2

Kgm sec-2

Kgm2 sec-1

Kgm-1 sec-1

the wavelength of transverse wave travelling with a speed 'v' having frequency 'f' in equal to

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f/v

Vf

V/f

f/V2

Which of following is irreversible process

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Slow compression of an elastic spring

Slow evaporation of substances in isolated vessel

Slow expansion of a gas

A chemical explosion

The wave form of SHM is.

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Sine wave

Cosine wave

Tangent wave

Square wave

100 radians are equal to.

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57.3^o

75.3^o

573^o

5730^o

The horizontal range of a projectile of 30^owith horizontal is same at an angle.

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40^o

45^o

90^o

60^o

Soap film is sunlight appears coloured due to.

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Dispersion of light

Diffraction of light

Scattering of light

Interference fo light

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