Question # 1

Leslie's cube is a bod of

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Metal

None Metal

wood

Metalloids

Formula of Power:

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P = wt

P = w/t

P = t/w

P = w/t²

Unit of thermal conductivity is .

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Wmk

W m^-1 K^-1

Wm

None of these

The density of a substance can be found with the help of:

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Pascal's law

Hook's law

Archimedes principle

Principle of floatation

Latent heat of fusion of water is:

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3.36 x 10¹⁰ Jkg^-1

93.6 x 10¹⁰Jkg^-1

3.36 x 10⁵Jkg^-1

None of these

In measurement 1.032 numbers of significant figure are.

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1

2

3

4

A couple is formed by

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Two forces perpendicular to each other

Two like parallel forces

Two equal and opposite forces in the same line

Two equal and opposite forces not in the same line

The net torque acting on a rotating body with uniform speed is:

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0

1

2

5

Heat form one of a metal rod a reaches to the other by the process of

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convection

radiation

conduction

both (a) and (b)

Quantities between which a graph is plotted are called.

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Scalars

Vectors

Variables

None

A black dull surface is a good ________ of heat:

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Emitter

Absorber

Reflector

Both A and B

A thimble of circular scale consists of equal division.

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100

10

1000

None of these

The gravitational force has the ________ relation with the distance between two masses:

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Direct

Inverse

Constant

None

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