Question # 1

When 1 kg of Uranium -235 is fused then energy released is

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67 x 10¹⁰ J

67 x 10⁷J

67 J

7 J

A large ripple tank with a vibrator working at a frequency of 30 Hz produces 25 complete waves in a distance of 50 cm.

The velocity of the wave is:

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53 cms^-1

60 cms^-1

750 cms^-1

1500cms^-1

Thermocouples convert:

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Heat energy into electrical energy

Heat energy into light energy

Heat energy into mechanical energy

Chemical energy into electrical energy

Information storage device work on the principles of:

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Heat

Sound

Light

Magnetism

In computer terminology information means:

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Any data

Raw data

Processed data

Large data

Application of electrostatic is:

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Car painting

Photocopying

Extracting of dust

All of these

The pitch of a sound is most closely related to its:

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Wave form

Period

Amplitude

Frequency

Human skin, in dry conditions, has a resistance of:

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20,000 ohm

100,000 ohm

30,000 ohm

2000 ohm

study of charges at rest is called:

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acoustics

electrostatics

electronics

electricity

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

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89 Protons

90 Protons

91 Protons

93 Protons

Electric potential and e.m.f.:

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Are the same terms

Are the different terms

Have different units

Both b and c

Mathematical formula of spring constant is:

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F/x

X/F

F/t

F/m

The angle at which prism deviates the incident ray is called:

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Angle of incident

Angle of reflection

Angle of deviation

Angle of minimum deviation

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