Question # 1

If the applied force is 'F' and its moment arm is 'r' then torque is defined as

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τ = rF

τ = r2F

τ = r + F

τ = 2rF

The formula of torque is:

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L= F x E

E = F x t

t = F x L

E = F x L

Number of factors on which torque depends :

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2

3

4

5

Leslie's cube is a box of:

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Metal

Non-Metal

Wood

Metalloids

____________ deals with temperature .

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Bio physics

Geophysics

Thermo physics

Plasma physics

The value of G is _________ every where:

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Same

Varying

Changing

1.62

The process in which heat is transfer due to actual movement of molecule is called.

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Conduction

radiation

Convection

All of these

The sum of kinetic energy and potential energy of molecules or atoms is called.

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Temperature

Internal energy

Kinetic energy

Potential energy

A body is said to be in __________ equilibrium if after a slight tilt return to its previous position:

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Stable

Unstable

Neutral

None

A couple is formed by:

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two forces perpendicular to each other

Two like parallel forces

To equal and opposite forces in the same line.

Two equal and opposite forces not in the same line

If a force F makes an angle θ with the direction of motion of the force, then the formula for the work done will be:

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W = FS

W = FS cosθ

W = FS sinθ

W = FS tanθ

Friction is caused by :

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Shining surface

Rough surface

Polished surface

Nil

Friction is due to

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Roughness

Shape

Smoothness

None

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