Question # 1

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

The velocity of a projectile is maximum

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At the highest point

At point of launching and just before striking the ground

At half of the height

After striking the ground

The centre of Newton's rings will be

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Dark

Bright

Coloured

Not visible

The behaviour of gases is discussed by

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Knowing their nature

Knowing their temperature

Kinetic theory

Maxwell's theory

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 internal energy of a piece of lead when beaten by hammer will.

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Increase

Decrease

Remains constant

Increases and then decrease

Computer Chips are made of

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carbon

Gemanium

Silicon

Sodium

If amplitude of a simple pendulum is increased by 4 times the time period will be.

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Four times

Half

Same

Two times

A typical diffraction grating has certain number of lines per centimeter whose range is.

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40 to 50

400 to 5000

400 to 500

4000 to 5000

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

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Infinite

2 g

3 g

zero

The SI unit for measuring plane angle is

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Streadian

Radian

Both a and B

None of these

The focal length of convex lens

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Negative

Positive

small

Large

Young in 1801 performed experiment for the first time about

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Interference

Diffraction

Polarization

Particle nature of light

The slope of velocity time graph shows

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Total distance covered

Average acceleration

Instantaneous acceleration

Torque

One mile is equal to

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1.625 km

1.609 km

1.325 km

1.850 km

When newton ring are seen through the transmitted light, then central spot is.

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Dark

Blue

Bright

Red

The state of human blood flow can be found by using.

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Newton's formula of speed of sound

Interference of sound

Phenomena of beats

Doppler's effect of sound

The magnifying power of a convex lens of focal lendth 10 cm is

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7

9.6

11

3.5

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