Question # 1

The power needed to lift a mass of 5000 g to height of 1 m in 2 secnd is

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2.45 watt

24.5 watt

245 watt

2.45 watt

Which is the process in which temperature of the system remains constant.

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Adiabatic process

Isochoric process

Isothermal process

Isobaric process

The dimension of pgh has same as that of

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Work

Energy

Pressure

Mass

Which quantity of the following is dimensionless.

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Angular velocity

Centripetal force

Angular acceleration

Angular displacement

When the body moves with constant acceleration the velocity time graph is

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Parabola

Hyperbola

Straight line

Curve

Pi radian is equal to.

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0^o

90^o

180^o

57.3^o

Horizontal range is maximum when the angle of projectile is.

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0 o

30 o

45 o

60 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

The final image seen through ey piece in telescope is.

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Real, enlarge and inverted

Vertual, enlarge and erect

Virtual, enlarge and inverted

In Real, enlarge and erect

The efficiency of diesel engine is about

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25 % to 30%

35% to 40%

40% to 50%

50% to 60%

In blue light is used as compare to red light then fringe spacing.

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Increase

Decreases

Remain same

Becomes zero

Stars moving away from Earth show a

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Green shift

Blue shift

Red shift

Yellow shift

A body covers a distance of 10 m in 1 sec with a constant velocity of 10 ms-1 , Acceleration produced by the body is.

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0 ms-1

2 ms-2

5 ms-2

10 ms-2

Bright fringes are also called as

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Minima

Maxima

Wave front

Ray of light

the locus of all pint in the same wave of vibration is called.

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Wave front

Diffraction

Interference

Polarization

If an object lies at focus point F in front of a converd lens, its image is formed at.

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2F

F

3F

Infinity

The frictional effect between the different layers of fluid is called

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Terminal velocity

Stock's law

Viscosity

Surface tension

Which is an example of irreversible process.

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Explosion

Evaporation

Slow compression

A chemical explosion

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