Question # 1

The SI unit of solid angle is

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Degree

Radian

Steradian

Candala

An object moves 5.0 m north and then 3.0 m south . Find both the distance travelled and the magnitude of the displacement vector.

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2.0 m, 8.0 m

8.0 m, 2.0 m

8.0 m, 8.0 m

2.0 m, 2.0 m

Which of the following pair does not have identical dimensions.

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Energy and torque

Momentum and impulse

Mass and moment of inertia

Energy and work

Solar cells are thin wafers made from

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Uranium

Nickel

Silicon

Cadmium

The dimensions of torque are.

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[MLT-2]

[ML-1T-1]

[ML2T-2]

[ML-2]

A horizontal force of 15 N accelerates a 4 kg object rom rest along a horizontal surface at a rate of 3 m s-2 At the end of 2 s the objects momentum will be.

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12 kg m s-1

24 kg m s-1

30 kg m s-1

45 kg m s-1

The SI unit of torque is

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kg ms-2

kg m2s-2

kg ms-1

kg m2 s-3

A body of mass 8 kg moves along a circle of radius 4 m with constant speed of 88 m s-1 The centripetal force on the body is.

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10 N

128 N

48 N

148 N

The source of geothermal energy is

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The fusion in the sun

the radioactive decay in the earths interior

the rotation of earth around the sun

The rotation of earth around its own axis

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

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Diagonal

Hypotenuse

Radius

Diameter

The acceleration due to gravity

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Has the same value everywhere in space

Has the same value every where on the earth

varix with altitude on the earth

Is great her on the moon owing to its smaller diameter

The moment of linear momentum is equal to

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Implies

Torque

Angular momentum

Couple

The path of projectile is maximum at

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Point of lauch

Highest point

Point of landing

Both a and c

The dimensional formula for torque is identical to.

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Kinetic energy

Pressure energy

Moment of force

All of the above

It the force acting on a body is doubled its acceleration becomes.

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Half

Constant

Double

One fourth

If average acceleration is equal to instantaneous acceleration then the body's said to be moving.

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Negative acceleration

Positive acceleration

uniform acceleration

Variable acceleration

Restoring force in SHM is.

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Centripetal

Frictional

Conservative

Non conservative

In simple harmonic motion we have the conservation of.

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K.E.

P.E

Total energy

Electrical energy

When net force acting on a system is zero which of the following will be constant.

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Force

Linear momentum

Angular momentum

Linear impulse

A body of mass 3 kg lies on the surface of the table 2 m high it is moved on the surface 4 m the change in P.E. will be.

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9.8 J

6 J

Zero

329 J

Acceleration due to gravity is not affected by which one of the following

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Latitude

Attitude

Longitude

Depth

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