Question # 1

When a body is whirled in a horizontal circle by means of string, the centripetal force is supplied by

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Mass of body

Velocity of a body

Tension in the string

Centripetal acceleration

The angle of projection for which its maximum height and horizontal range are equal

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46 ^o

56^o

66^o

76^o

The distance between two consecutive crest is called.

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Displacement

Amplitude

Wave front

Wavelength

The unit of rotational K.E. is

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rAD/SEC

Js

J

Kgm2

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

The value of angular momentum is maximum when 0 is

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90^o

60^o

75^o

45^o

For 2.450 no. of significant digits.

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2

1

3

4

The angular acceleration a =

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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 potential energy to the molecules of an ideal gas is considered to be.

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Maximum

Zero

1/2 kx²

1/2 kx

Time taken by light to reach from moon to earth is

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1 min 20 sec

8 min 20 sec

3 min 20 sec

2 min 20 sec

In case the work done in zero.

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Constant pressure

Constant volume

Constant temperature

Constant mass

No of spark plugs needed in the diesel engine are.

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0

1

2

3

A₁b₁= A₂b₂represents

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Stock's law

Newton's law

Equation of continuity

Brenoulli's equation

Law of physics expressed in term of

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Base quantites

Derived quantities

a and b

None of these

The centre of Newton's rings will be

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Dark

Bright

Coloured

Not visible

When the amplitude of a wave is increase to doubled is energy.

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Remain the same

Increases 4 times

Increases by two times

Decreases by half

Parallel vectors of same magnitude will be

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Equal

Opposite

Both a and b

None of these

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