Question # 1

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

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R/2

P

2P

Depending on the relative mass of the gases

Average value of A.C voltage during one cycle is

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1

Zero

Maximum

Variable

The number of countries who manage the largest satellite system is:

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3

24

126

200

If you are moving at relativistic speed between two points that are a fixed distance apart, then the distance between the two points appers

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larger

shorter

equal

none of these

The horizontal range of projectile, at a certain place, depends upon

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the mass of the projectile

velocity of projection

angle of projection

angle as well as velocity of projection

Compton was awarded Nobel prize in physics in

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1921

1923

1925

1927

Two point charges A and B separated by a distance R attract each other with a force of 12 x 10^-3N. The force between A and B when the charges on them are doubled and distance is halved

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1.92 N

19.2 N

12 N

0.192 N

If the object and its image are located at a distance of 5 cm from the focus of a convex lens, the focus length of the lens will be:

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5 cm

10 cm

20 cm

25 cm

The quantity have dimension of ML²T⁰²will have SI unit of:

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Watt

Newton

Joule

Metre

When two objects come to common temperature, the body is said to be in:

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Static equilibrium

Dynamic equilibrium

Thermal equilibrium

None of these

The slopes of the tangent at any point on the curve gives the value of the

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average velocity at that point

instantaneous velocity at that point

average acceleration at that point

instantaneous acceleration at that point

Five equal forces of 10N each are applied at one point and all are lying in one plane.If the angles between them are equal,the resultant force will be:

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Zero

10 N

20 N

10 √2 N

The typical speed of Earth around the sun is

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29700 ms^-1

29600 ms^-1

29500 ms^-1

29400 ms^-1

The gravitational acceleration decreases inversely as the distance from the centre of the Earth is

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Square

One time

Three times

None of these

The sky appears blue because

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Red light is absorbed

Blue light is scattered the most

Blue light is absorbed

It is its natural color

The blood vessels are inflated eve in

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Relaxed states between heart beat

Working state between hear beat

Occasionally

None of these

Which of the following is more elastic material?

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iron

Aluminum

Wood

Rubber

When the source of light is at very large distance, the shape of wavefront is:

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Spherical

Cylindrical

Plane

None of these

The forbidden energy gap in semiconductors

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Lies just below the valence band

Lies just above the conduction band

Is the same as the valence band

Lies between the valence band and conduction band

The dimensions of intensity of energy are

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MLT⁺²⁷T¹

MLT²T²

ML³

MLT^-2T³

The power loss can also take place due to

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Information received can be inaccurate due to dispersion

Light signal may not be perfectly monochromatic

Signal accuracy may be affected by deflective source

All of these

Bulk modulus for diamond is

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250

540

695

714

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