Question # 1

Example of bad conductor is:

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Wool

Iron

Graphite

Gold

The unit of heat capacity is:

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Jkg k

JK^-1

Jkg^-1K

J^-1kg^-1K^-1

Atmospheric pressure is measured by an instrument called:

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Barometer

Altimeter

Meter rod

Hydrometer

The height of geostationary satellites with respect to Earth is

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36,300 km

40,300 km

30,300 km

42,300 km

Highly conducting state of matter is:

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Solid

Liquid

Gas

Plasma

Those objects that conduct electricity are:

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Conductors

Insulators

Semi conductOrs

None of these

Centripetal force always acts _________ to the motion:

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Opposite

Parallel

Perpendicular

Upward

Plasma is .......... state of matter .

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Molecular

Fourth

Smallest

Nil

Steam is used to run machine because of high amount of ___________ heat.

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Latent

Great

Large

Nil

The S.I unit of power is :

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j/s2

J

W

J/M2

Mathematically density is defined as

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mass/volume

force/area

volume/mass

mass/area

Two bodies of masses m₁ and m₁ attached to the ends of an inextensible string passing over a frictionless pulley such that both move vertically. The acceleration of the bodies is:

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m1 x m₂ / m₁ + m₂ g

m₁ - m₂ / m₁ + m₂ g

m₁ + m₂ / m₁ - m₃ g

None of these

When a body is lifted through a height the work done on its appears in the form of its:

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Kinetic energy

Potential energy

Elastic potential energy

Geothermal energy

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