Question # 1

In the equation E=mc²value of c is:

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1,86,000 miles per hour

1,86,000 miles per sec

3 X 10⁸m/sec

Both A and C

Both B and C

The vertical and horizontal range will be equal id angle of projection is

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76°

45°

60°

120°

Strength of magnetic field is measured in SI units, in:

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N

N/Am

Am/N

Nm/A

None of these

Converse of pair production is known as

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Compton effect

annihilation of matter

photoelectric effect

none of these

One joule is equal to

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1.6 x 10¹⁹eV

6.25 x 10¹⁸eV

1.6 x 18¹⁸eV

6.25 x 10¹⁹eV

When each particle of the fluid moves along a smoth path, this path is known as

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straight path

smooth path

haphazard path

steamline

Albert Einstein got the Nobel prize in physics for his explanation of photoelectric effect in

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1916

1919

1921

1923

If the ends of a wire are connected to a battery an electric field E will be set up at:

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The ends of the wire only

Mid points of the wire only

Every point within the wire

At nodes only

Both (B) and (D)

Electromagnetic radiation or photons interact with matter in

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two distinct ways

three distinct ways

four distinct ways

five distinct ways

In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is

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8

4

6

7

When the particles of the medium vibrate about their mean position, along the direction of the motion of waves, then the waves are called:

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Longitudinal waves

Transverse waves

Water waves

Complex waves

A hole is drilled half-way to the centre of earth. A body weighs 200 N on surface of earth. How much will it weigh at bottom of the hole

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100 N

150 N

200 N

250 N

Mathematically the instantaneous velocity is defined as

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On moving a charge of 20 coulombs by 2 cm,2J of work is done,then the potential difference between the points is

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0.1 V

8 V

3 V

0.5 V

To get higher magnification we must use

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Simple microscope

A convex lens

A compound microscope

All of these

A semi conductor in its extremely pure from is known as

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extrinsic semi-conductor

intrinsic semi-conductor

either of them

none of them

No body begins to move or comes to rest of itself said by

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Thomos Young

Abu Ali Sena

Newton

None of these

Dimensions of velocity are

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[L]

[T]

[LT^-1]

[LT^-2]

A pure semiconductor has:

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An infinite resistance at 0^oC)

A finite resistance which does not depend upon temperature

A finite resistance which decreases with temperature

A finite resistance which increase with temperature

The siemens is the SI unit of

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Resistance

Specific Resistance

Conductance

Inductance

No work is done by the body when angle between force and displacement is

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0^o

45^o

90^o

60^o

The velocity of efflux is 100 m/sec and area of hole is 0.06 cm²how much volume of water will flow out of hole in one second

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6.0 x 10-⁴m³

6.0m³

600m³

6.0cm³

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