Question # 1

Which is nooptically active

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Sugar

Tartaric acid

Water

Sodium chloride

Before the launch of a rocket the mass of fuel of the rocket is approximately consists of.

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60%

50%

80%

100%

The product of time period and frequency is.

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Zero

1

2

3

In simple harmonic motion the velocity of a particle is maximum at.

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Extreme position

Mean position

In between extreme and mean position

None of them

Standard metal according to Michelson's interferometer is equivalent to

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1553163.5 wave meter

3 x 108meter

15503000 meter

None of these

The device used for measurement of liquid flow is.

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Manometer

Barometer

Hydrometer

Venturimeter

The portion of the wave above mean level is called.

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Node

Antinode

Crest

Trough

The produce oscillation, body is pulled away from its

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Mean position

Extreme position

Both a and b

None of these

A body covers a distance of 10 m in 1 sec with a constant velocity of 10 ms-1 , Acceleration produced by the body is.

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0 ms-1

2 ms-2

5 ms-2

10 ms-2

3 Joules of work id done is 3 seconds, then power

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6 Watt

1 Watt

3 Watt

2 Watt

The frequency of waves produced in microwave oven is

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1435 Hz

2450 MHz

1860 MHz

2850 Hz

Damping is the process in which energy

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Increases

Remains constant

Dissipates

None of these

When the body moves with constant acceleration the velocity time graph is

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Parabola

Hyperbola

Straight line

Curve

Average translational K.E. of molecules for an ideal gas is given as

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1/2 KT

KT

2/3 KT

3/2 KT

Pressure of fluid will be low where speed of fluid is.

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Low

Zero

High

Constant

The dimension of pgh has same as that of

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Work

Energy

Pressure

Mass

The molecules of an ideal gas exert

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Force on each other

No force on each other

Large force on each other

Pressure on each other

Supplementary units are.

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Three

Two

Five

One

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