Question # 1

Kilo watt hour is the unit of

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Power

Energy

Force

Torque

If 'N' is number of lines rule don the grating having length 'L' then grating element 'd' is given by.

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N/L

2N/L

L/N

N/2L

A spring of spring constant 10 N/m after loading that amplitude is 2m. Then the maximum P.E. is

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10 J

20 J

30 J

40 J

For working of heat engine, there must be

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A source

A sink

Ether of these

Both of them

The commercial unit of electric energy is

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Kilo watt hour

watt

Watt hour

Kilo Watt

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

Which quantity of the following is dimensionless.

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Angular velocity

Centripetal force

Angular acceleration

Angular displacement

The weight of the body at the centre of earth is

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Maximum

Minimum

Zero

Infinite

Which one is non renewable source of energy.

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Hydro electric

Bio mass

Tides

Oil

The law of conservation of mass gives us

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Equation of continuity

Stock's law

Bernoulli's equation

Viscosity

The device used for measurement of liquid flow is.

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Manometer

Barometer

Hydrometer

Venturimeter

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

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Resolving power

Magnification

Scattering

Reflection

The final image formed by a simple microscope.

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Virtual and inverted

Real and erected

Virtual and erected

Real and inverted

When water falls from tap, its cross sectional area decrease due to.

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Decrease of speed

Increase of speed

Air pressure

Gravity increase

The Carnot cycle can be shown by which graph

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P - T graph

P - V Graph

V- T graph

PV -T graph

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

The magnitude of A will be

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Zero

A²

1

A

Newton's laws of motion were published in

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1587

1687

1787

1887

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