Question # 1

The actual efficiency of property turned petrol engine is.

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20% to 30%

30% to 35%

40% to 45%

25% to 30%

The work done is isochoric process is.

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Constant

Variable

Zero

Depend upon condition

The commercial unit of electric energy is

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Kilo watt hour

watt

Watt hour

Kilo Watt

Interplaner distance can be determined by

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Newton's rings

Bragg's law

Diffraction pattern

Interferometer

The work done in gravitational field

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Depend upon the path

Does not depend upon the path

(+)ve

Zero

Total confined light is obtained by

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Total internal reflection

Refraction of light

Diffraction

Polarization

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

A convex lens can be used as

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Simple microscope

Compound microscope

Telescope

Spectrometer

The ratio of size of image and size of object is

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Focal length

Magnification

Resolving power

Principle focus

The types of optical fibres are

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Three

Four

Five

Six

Original source of energy for biomass is

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Earth

Star

Moon

Sun

If an object is placed with in the focal length of a convex lens, its image is formed.

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Real

Inverted

Virtual

Smaller than object

The rate of change of angular velocity is called

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Angular velocity

Angular acceleration

Angular displacement

Angular speed

Systematic erro occurs due to

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Instrument

Zero erro of the instrument

Botah a and b

None of these

The dimension of viscosity are

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[M2L-2T2]

[M-1LT-1]

[M-1L-1T]

[ML-1T-1]

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

Half wavelength corresponds to

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0 ^o

90 ^o

180 ^o

360 ^o

When a body is moving along a circular path, then such a motion is called

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Vibratory motion

Rotatory motion

Linear motion

None of these

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