Question # 1

The escape velocity

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Is independent of mas of the body

Increases with the increases of mass of the body

Decreases with the decreases of mass of the body

Depends upon the type of body used

A spring of force constant k is out into three equal pats. The force constant of earth part will b e.

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k

3 k

k/3

k/2

Restoring force in the SHM is

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Centripetal

Frictional

Conservative

Non conservative

The process where by energy is dissipated from the oscillating system is called.

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Resonance

Damping

Forced oscillation

Free oscillation

Rate of change of momentum is called.

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Torque

Force

Impulse

Inertia

Which of the following statements concerning G and g is true.

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g is scalar white g is a vector

g is inversely proportional to the mass of the planet

g is independent of the mass of the planet

both G and g have the same units

Angular momentum of a body under a central force is

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Zero

Maximum

Minimum

Constant

Which pair of the following forces has a resultant force of 2 N.

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1 N and 1 N

1 N and 3 N

1 N and 2 N

2 N and 2 N

Solar cells are thin wafers made from

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Uranium

Nickel

Silicon

Cadmium

Which quantity has different units from the other three.

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Density x volume x velocity

Rate of change of momentum

Young's modulus x area

Weight

If a gymnast sitting on a rotating stool with his arms out stretched lowers his arms.

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The angular speed increases

The angular speed decreased

The angular speed becomes zero

The angular speed becomes constant

A body is in a static equilibrium, only when it is

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Moving with uniform velocity

Moving with variable velocity

Moving with uniform acceleration

at rest

The SI unit of coefficient of viscosity of

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kg m s-1

kg m-1 s-1

kg ms -2

The mass that appears in Newton's second law is known as.

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Rest mass

Gravitational mass

Inertial mass

Weight

An object falls freely under gravity the vertical equilibrium of the body inside is

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Stable

Unstable

Neutral

Unknown

If the rate of change of momentum w.r.t Time is zero then

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Momentum is a function of time

Momentums is not conserves

Momentum is constant

The impulse is into he same direction as the momentum

When a body acceleatres.

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Its direction always chances

It mass always changes

It velocity always changes

It falls towards the earth

Simple harmonic motion may be assumed as a projection of uniform circular motion along a

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Diagonal

Hypotenuse

Radius

Diameter

When a force of 4 N acts on a body of mass 2 kg for a time of 2 s, the rate of change of momentum is.

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2 kg ms -1

4 kg ms-1

8 kg m s-1

16 kg m s-1

A man of mass 100 kg is standing in an elevator. The net force acting on the man reads its weight when the elevator is going up with acceleration 4 m s-2 would be.

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100 N

590 N

490 N

980 N

Two simple pendulums of the same length but having different masses

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Have different frequencies

Will have period proportional to their masses

Will have periods independent of their length

Have the same period

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