Question # 1

Fringe spacing in Young's double slit experiment increases due to increase in.

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Slit separation

Wave length

Order of Fringe

Frequency of source

the change in internal energy is defined as

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Q - W

Q-T

Q + P

Q - P

When body acquires terminal velocity them its acceleration 'a' becomes.

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a = 0

a = g

a > 0

a < 0

The centripetal force is always directed

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Away from the centre along the radius

Along the direction of motion

Opposite to the motion of the body

Towards the centre along the radius

Intensity of light depend on

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Wave length

Amplitude

Velocity

Frequency

If the initial velocity of a projectile becomes doubled, the time of fight will be.

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Same

4 times

Double

3 times

The motion of gas molecules is

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In the same direction

Random

Walls of container

Opposite to each other

Boltzman constant 'k' has same unit as.

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Temperature

Energy

Entropy

Pressure

The slope of velocity time graph shows

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Total distance covered

Average acceleration

Instantaneous acceleration

Torque

For a diatomic gas Cv= 5R/2 then gamma for this gas is.

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5/7

4/35

7/5

35/4

the systolic pressure of normal healthy person is.

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120 torr

130 torr

115 torr

110 torr

The motion of a body moving along a circular path is called.

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Translational motion

Angular motion

Vibratory motion

Linear motion

Height of geo stationary orbit of the satellite above the earth is.

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300 km

250 km

400 km

None of these

A force of 10 N acts on a body of mass 5 kg in one second. The change in its momentum will be.

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10 kgms-1

50 kg ms-1

2 kg ms-1

20 kg ms-1

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

The SI unit of angular momentum is

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J.S-2

J.S-1

J.S

J.m

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

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Doppler's effect

reflection

Laplace correction

Beats

Work is a

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Scalar quantity

Vector quantity

Basic quantity

None of these

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