Question # 1

_____________ easily undo bolt?

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Long spanner

Medium

Short spanner

Every spanner

Example of bad conductor is:

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Wool

Iron

Graphite

Gold

Ice at ............ °C is more effective in cooling.

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0

-1

-2

-3

Weight of the body is__________ to the gravity force between body and earth:

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Less than

Greater than

Equal

Constant

In which of the following state molecules don not leave their position?

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Solid

Liquid

Gas

Plasma

Forces on doubled arm spanner are called.

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Torque

Couple

Moment of force

Momentum arm

The study of internal structur eof Earth is called.

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Atomic Physics

Plasma Physics

Geo physics

Nuclear Physics

If mass of body is 10 kg travelling with speed of light, how much energy is generated?

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E = 9 × 1017 J

E = 9 × 1015 J

E = 9 × 1018 J

E = 9 × 1016 J

The velocity of geostationary satellites with respect to the Earth is:

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Maximum

Zero

Minimum

100 ms^-1

In Which of the following state molecules do not leave their position?

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Solid

Liquid

Gas

Plasma

The average speed of cheetah is.

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60 kmh^-1

70 kmh^-1

75 kmh^-1

80 kmh^-1

When a uranium (92 protons) ejects a beta particle, how many protons are left in the remaining nucleus?

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92 protons

91 protons

93 protons

89 protons

Which of the following is an insulator:

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Copper

Iron

Silk

Silver

To hear echoes, the minimum distance of the obstacle from source of sound should be:

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10m

15m

17m

20m

Number of poles in a magnet is:

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One

Two

Three

Unlimited

The device which is used to convert sound waves into electrical signal is called:

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Ear piece

Microphone

Transmission channel

Receiver

A positive electric charge:

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Attracts other positive charge

Repels other positive charge

Attracts a neutral charge

Repels a neutral chage

The refractive index of internal coating of optical fibre is:

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1.56

1.51

1.53

1.58

The speed of sound of water at 25 ^oC is:

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1530 ms^-1

1531 ms^-1

1560 ms^-1

1570 ms^-1

In electrostatic all charges are in:

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The same direction

Opposite direction

Motion

Static state

An object is placed at the Centre of curvature of a concave mirror. The image produced by the mirror is located:

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Out beyond the centre of curvature

At the centre of curvature

Between the centre of curvature and the focal point

At the focal point

If we double the distance between two charges, then force becomes:

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4-times

¼ th

Double

Half

The units of magnifying power of microscope or telescope are.

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Metre

m^-1

dioptre

No unit

An ideal reversible heat engine has

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100% efficiency

Highest efficiency

80%

90%

The time rate of change of momentum equals

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Weight

Applied force

Impulse

Mass

Waves transport energy without transporting

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Matter

Force

Momentum

All of these

A cycle of petrol engine undergoes

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Two process

Three process

Four process

single process

The instrument which detects the instant as which the external pressure becomes equal to the systolic pressure is called.

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Manometer

Sphygmomanometer

Barometer

Stethoscope

For a diatomic gas Cv= 5R/2 then gamma for this gas is.

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5/7

4/35

7/5

35/4

Force 12 N and 5 N are add, the resultant con not be

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13 N

6 N

7 N

17 N

Angle between ray of light and wave front is

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0 ^o

60 ^o

90 ^o

120 ^o

Speed of sound in copper is

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38000 ms-1

3600 ms-1

3500 ms-1

3400 ms-1

The motion of a body moving along a circular path is called.

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Translational motion

Angular motion

Vibratory motion

Linear motion

The ratio of potential barriers of Ge to Si at room temperatrue is.

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7:3

1:3

2:5

3:7

In glass, molecules are irregularly arranged so it is known as.

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Solid

Liquid

Solid liquid

Gas

The effective way to increase the sensitivity of moving coil galvanometer is.

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Increase the area of coil

Increase the number of turn

Increase the magnetic field

Increase the value of constant C

Seven resistances are connected as shown in the figures . THe equivalent resistance between A and B is:

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3Ω

4Ω

4.5Ω

5Ω

The physical quantity related to photon, that does not change in Compton scattering is.

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Energy

Speed

Frequency

Wavelength

The potential difference between the top and bottom of a cloud chamber is of the order of

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290 v

400 v

1 kv

None of above

The particles which do not experience strong force are called.

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Baryons

Hadrons

Mesons

Laptons

Net charge enclosed by Gaussian surface is:

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zero

maximum

depend on intensity

none of all

the number of terminals in a semiconductor diode are

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2

3

4

5

Nuclear fission was discovered by:

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Otto Hahn

Friz strassmann

Both a and b

Michaelson

The most abundant isotope of neon is:

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Neon 21

Neon 20

Neon 22

None of above