Question # 1

Ethanol is a replacement of

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Gasoline oil

Kerosene oil

Refinery oil

vegetable oil

The total energy of body executing SHM is directly proportional to.

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Amplitude

Square of amplitude

Square root of amplitude

Reciprocal of amplitude

Which of the following quantity is zero about the centre of mass of baody.

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Mass

Acceleration

Moment

Angular momentum

The gravitational strength on the surface of moon is 1.6 N kg-1 What will be the mass and weight of an object respectively on the surface of the moon.

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10 kg , 1.6 N

10 Kg , 16 N

16 Kg, 10 N

16 kg, 160 N

A fixed pulley is emplyed to

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Do some work

Change the directionof force

Do more work with the same force but without using the pulling

Have mechanical advantage greater than 1

Which of the following is a set of supplementary units.

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Radian and steradian

Radian and mole

Steradian and candela

Radian and kelvin

Light year is a unit of

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Light

Velocity

Time

Distance

The magnitude of resultant of three force is 3. If its x-component is 2, Y component is 1. Its 2-component will be.

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1

2

3

4

If gravitational field is not uniform over the extended object or system of point masses the centre of mass and centreof gravity will

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Be antiparallel

Not coincide

Coincide

Be perpendicular

The graph between restoring force and time in SHM is a

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Straight line

Parabola

Sine wave

Circle

Which vector gives the displacement from one point to another in space.

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Position vector

Unit vector

Null vector

Distance vector

A body in equilibrium may not have

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Velocity

Momentum

Acceleration

K.E

In projectile motion, the body has

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One component of velocity

Two components of velocity

Three components of velocity

No component of velocity

Which are the two basic properties of a vector.

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Curvature and direction

Magnitude and direction

Magnitude and sign

Curvature and sign

If a force 5 N applied parallel to a moment arm 5 m then torque will be

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0 N m

5 N m

10 N m

25 Nm

The SI unit of torque.

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kg m2

kg ms-2

kg m2 s-2

kg ms -1

The hydrogen filled balloon possesses

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P.E

K.E

Heat energy

Elastic energy

The dimensional formula for torque is identical to.

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Kinetic energy

Pressure energy

Moment of force

All of the above

The moment of linear momentum is called.

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Torque

Couple

Impulse

Angular momentum

In an elastic collision

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K.E. is conserved

Both K.E. and momentum are conserved

K.E. is not conserved

Only momentum is conserved

Vectors are ofhen spilt into two or more orthogonal components what is true of these components.

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they are perpendicular

They are parallel

They are antiparallel

They have same magnitude

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