Question # 1

_____________ is centre from which its mass is equally distributed:

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Cebtre of mass

Centre of gravity

All of above

None

Which pair of physical quantities has same SI unit?

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energy , power

power , work

energy , work

work , momentum

Moon is our satellite:

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Artificial

Permanent

Natural

Communication

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

Which one of the following converts light energy into electrical energy?

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Electric bulb

Electric generator

Photo cell

Electric cell

Moon is nearly _________ km away from earth.

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6 x 10²⁴

380000

199.62 km

30000

Acceleration is produced by 20 N force it is due to:

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Inertia

Force

Momentum

None

Independent quantities are taken on

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- x - axis

x -axis

-y-axis

y-axis

All divers need to wear seat belt because of effect of:

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Air resistance

Tensional

Push force

Gravitational

A crate is moved by pulling the rope attached to it. it moves 10 m on straight horizontal read by a force of 100 N. How much work will be done when the rope is making an angle of 30° with the road?

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5 Joules

86 Joules

707 Joules

866 Joules

Orbital velocity v_o =

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√gR

√RG

gR

gR²

The study of the structure and properties of atom is called.

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Electricity

Nuclear physics

Geo Physics

Atomic Physics

Significant figures in 0.0010 are.

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One

Two

Three

Four

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