Question # 1

Matter has basically ___________ states.

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4

3

Both a & b

None

The potential energy of a body of mass 'm' placed at a height 'h' above the surface of earth is equal to

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P.E. = mg

P.E. = mgh

P.E. = 3mgh

P.E. = 2mgh

Metals are good conductor of heat dut to the:

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Free electron

Big size of their molecule

Small size of their molecules

Rapid vibrations of their atoms

Celsius temperature is converted into Fahrenheit temperature using the formula

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F = 1.8 C + 32

F = 1.8 C - 32

F = 1.4 C + 32

F = 1.4C - 32

Coefficient of friction between tyre and dry road is.

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0.6

1

0.05

0.2

Newton's first law of motion is valid only in the absence of:

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Force

Not force

Friction

Momentum

An interval of 200 micro second equivalent to.

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0.2 s

0.02 s

2 x 10^-4 s

2 x 10^-6 s

Rate of change of momentum is equal to:

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Mass

Torque

Weight

Force

Plasma is in ___________ form.

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Moleculer

Kinetic

Static

Ionized

In falling object potential energy is covered to:

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K.E

Force

P.E

Nil

In solid, heat is transferred by:

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Radiation

Conduction

Convection

Absorption

When a stress on a body crosses the limit, called the?

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Elastic limit

Plastic limit

Failure point

Breaking point

Which is expert thermal climber:

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Crow

Sparrow

Hawks

None

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