Question # 1

Light year is a unit of

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Light

Velocity

Time

Distance

A car is travelling with uniform acceleration the road has check posts every 100 m When the car passes one post , it has a speed of 10 m s-1 and when passes the next one its speed is 20 ms-1 What is the cars acceleration.

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0.67 m s-2

1.5 m s2

2.5 m s-2

6.0 m s-2

What is the number of degree of freedom of an oscillating simple gravity pendulum

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1

2

3

4

When an arrow is shot from a bow, it has K.E. which is given to it by

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The elongated tail

The stretched string of bow

The throw of archer

The sharp arrows head

Which example best illustrates the conservation of electrical energy to chemical energy.

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Starting a car

Generating hydroelectric power

Changing an accumulator

Melting a fuse

Which of the following is not necessary for work to be done.

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A constant force

An applied force

A displacement

Force component along the displacement

Which of the following quantities associated with SHM does not vary periodically.

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velocity

Displacement

Acceleration

Total energy

The 1st condition of equilibriums satisfied if.

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Linear acceleration is zero

Angular acceleration is zero

The vector sum of all the forces is zero

The vector sum of all the torque is increase

Planets move around the sun due to.

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Centrifugal force

Centripetal force

Gravitational pull between them

Frictional force between them

Two vectors of magnitudes 5 N and 7 N respectively are acting on a body if the angle between them is a right angle, their resultant vector will be.

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2 N

4 N

6 N

8 N

A body at rest may have

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Speed

Momentum

Acceleration

Energy

If the earth stopped rotating the weight of objects at either pole would.

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Be grater

Be less

Vary with altitude

Be the same before

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 body acceleatres.

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Its direction always chances

It mass always changes

It velocity always changes

It falls towards the earth

The value of 'g' is affected by earth's

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Non spherical shape

Daily motion

Volume

Density

tuning a radio set is an example of.

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Musical resonance

Electrical resonance

Mechanical resonance

Damping

The circular motion of a particles with constant speed is.

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Periodic and SHM

Periodic but not SHM

SHM and not periodic

Neither periodic nor SHM

The SI unit of density is.

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kg m2

kg m-2

kg m-3

kg m2 s-2

If a force of 50 N is acting along x axis , then its component along y-axis will be.

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Zero

The same

Of the half magnitude

Of the double magnitude

Rate of change of momentum is called.

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Torque

Force

Impulse

Inertia

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

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Mass

Acceleration

Moment

Angular momentum

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