Question # 1

If the radius of droplet becomes half, then its terminal velocity will become.

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Double

Half

One fourth

Remains same

Two waves of same frequency and moving in the same direction produces.

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Interference

Diffraction

Beats

Stationary waves

The value of of 'g' at the centre of the earth is

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Infinite

2 g

3 g

zero

The product of cross sectional area of a pipe and speed of fluid along the pipe is

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Zero

Maximum

Constant

Variable

A convex lens can be used as

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Simple microscope

Compound microscope

Telescope

Spectrometer

The lower reading of blood pressure is called.

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Systolic pressure

Diastolic pressure

Normal pressure

Non normal pressure

The minimum number of correctly positioned communication satellites to cover whole populated earth is.

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2

3

100

200

The periodic variations of sound between maximum and minimum loudness are called.

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Doppler's effect

reflection

Laplace correction

Beats

Bio mass is converted into fuel by

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Evaporation

Fermentation

Reflection

Scattering

The to and fro motion of a body is called

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Linear motion

Rotational motion

Vibratory motion

None of these

Which is not the essential component of a spectrometer.

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Collimator

Telescope

Turntable

Microscope

Which of the following is mechanical wave

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Heat

Light

Sound

None of these

The artificial satellites are held in orbits by

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Gravitational force

Electric force

Magnetic force

All of these

Which one of the scientist made some contribution to geometrical optics?

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Phythagoras

Archimedes

Euclid

Plato

Pi radian is equal to.

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0^o

90^o

180^o

57.3^o

The angle between x-axis, y-axis and z-axis is

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45°

60°

75°

90°

In rotational motion the torque is equal to rate of change of

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Angular velocity

Linear momentum

Angular momentum

Angular acceleration

In stationary waves the points which always remain at rest are.

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Nodes

Antinodes

Crest

Trough

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