Question # 1

When two waves of same frequency travel in opposite direction, the phenomenon will be

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Diffraction

Stationary waves

Polarization

Interference

The direction of angular velocity of along the

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Tangent at that point

Axis of rotation

Radius towards the centre

Radius away from the centre

The accepted value for speed of light in vacuum

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2.99 x 10⁸m - sec^-1

2.99 x 10⁶m - sec^-1

2.99 x 10⁸km - sec^-1

2.99 x 10⁸m - h^-1

The components of a vector which are perpendicular to each other are called

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Horizontal components

Vertical components

Rectangular components

All of these

The number of significant figures with the increases degree of approximation

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Decreases

Increases

Remains unchanged

None of these

Minimum number of unequal forces whose vector sum can be zero are.

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5

4

3

2

The slope of velocity time graph shows

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Total distance covered

Average acceleration

Instantaneous acceleration

Torque

P.E. of a spring is stored in

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Spring

mass

Both of them

None of these

The dimensional of potential energy per unit volume are same as that of.

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Work

Pressure

Speed

Density

The SI unit of power is

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Joule

Newton

Watt

Kilowatt

Einstein's theory gives us the physical picture of how the

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Body moves

Gravity works

Moment of inertia produced

Weightlessness creates

The distance between two consecutive wave front is equal to

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One wave length

Two wave length

Half wave length

Three wave length

The waves used in radar speed trap are

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Longitudinal

Sound wave

Micro waves

Matter waves

The diver spin faster when moment of inertia becomes.

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smaller

Greater

Constant

Equal

In stationary waves, the particle velocity at nodes is

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Minimum

Maximum

Zero

Constant

In stationary waves, the velocity of particle at the node is.

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Maximum

Infinite

Zero

Varible

Which of the following is not directed along the fixed axis of rotation.

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Angular displacement

Angular momentum

Centripetal acceleration

Angular acceleration

For 2.450 no. of significant digits.

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2

1

3

4

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