Question # 1

the wavelength of transverse wave travelling with a speed 'v' having frequency 'f' in equal to

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f/v

Vf

V/f

f/V2

The efficiency of a Carnot Heat Engine is 100% if temperature of sink T2 is.

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0 ^oC

0 K

0 ^oF

100 K

The motion of a simple pendulum is the example of

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Vibratory motion

Rotatory motion

Periodic motion

Both a and c

Size of the molecules is much smaller as compared to the

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Mass of the molecules

Distance between the molecules

Density of the molecules

Volume of the molecules

The focal length of a concave lens is always

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+ve

-ve

Zero

None of these

The kinetic energy of molecules of an ideal gas at absolute zero is

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Very low

Very high

Zero

First increases then decreases

A convex lens acts as diverging lens if the object is placed at

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F

2F

Between F and 2 F

Within the F

The concentration of red blood cells in the blood is nearly.

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40%

60%

25%

50%

X-ray diffraction has been very useful in determining the structure of

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Hemoglobin

Stars

Galaxies

Stones

The terminal velocity can be obtained by using

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Newton's law

Stock's law

Guass's law

None of these

Frequency 'f' and time period 'T' are related as

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A spring of spring constant 10 N/m after loading that amplitude is 2m. Then the maximum P.E. is

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10 J

20 J

30 J

40 J

the distance covered during one vibration of an oscillating body in terms of amplitude 'A' is

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A/2

A

2A

4A

A cycle of petrol engine undergoes

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Two process

Three process

Four process

single process

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

Radar system is an application of.

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Chemical effect

Electric effect

Magnetic effect

Doppler's effect

The action and reaction never act on

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Same body

Two bodies

many bodies

All of these

If the slope of a velocity time graph gradually decreases than body is said to be moving with

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Positive acceleration

Negative acceleration

Uniform velocity

None

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