Question # 1

A 10 kg rocket fragment falling towards the earth has a net downward acceleration of 5 ms -2 The net downward force acting on the fragment is

Choose an answer

5 N

10 N

50 N

105 N

Restoring force in the SHM is

Choose an answer

Centripetal

Frictional

Conservative

Non conservative

A constant mass undergoes uniform acceleration the correct statement about the resultant force acting on the mass is.

Choose an answer

It increases uniformly w.r.t time

It is constant but not zero

It is proportional to the displacement from a fixed point

It is proportional to the verlocity

In simple harmonic motion it is found that the total energy of a system.

Choose an answer

Is independent of the amplitude

Depends on the amplitude squared

Is independent of the mass

All of these

Ethanol is a replacement of

Choose an answer

Gasoline oil

Kerosene oil

Refinery oil

vegetable oil

If the K.E. of a body becomes 4 times of its initial value, the new momentum will be

Choose an answer

half

Same

Double

4 times

Linear acceleration of a point moving in a circle of radius 30 cm with angular acceleration of 0.5 rad s-2 is

Choose an answer

1.5 cm s-2

2.5 cm s-2

10 cm s-1

15 cm s-2

Two forces each of 10 N magnitude act on a body It the forces are inclined at 30 ^o and 60 ^o with x-axis, then the x-component of their resultant is.

Choose an answer

10 N

1.366 N

13.66 N

1.35 .6 N

In rotational motion the quantity which plays the same role as the inertial mass in rectilinear motion.

Choose an answer

Angular momentum

Linear momentum

Moment of inertia

Torque

Light year is a unit of

Choose an answer

Light

Velocity

Time

Distance

Which of the following is non renewable source of energy.

Choose an answer

Wind

Coal

Hydroelectric

Biomass

A body is termed as perfectly elastic if.

Choose an answer

It can move freely

Its surface is perfectly somooth

It is not affected by an external force

It recovers the original shape when the deforming force is remover

A mason of 9.8 N weight is climbing on a 20 m high ladder The P.E. of mason at the middle of ladder is.

Choose an answer

98 J

196 J

960.4 J

980 J

Where should be the centre of gravity of a body.

Choose an answer

It must be within the body

It must be outside the body

It may be near but not essentially within the body

It changes its position after sometime

A force of 50 N acts on a body for 10 s What will be change in momentum.

Choose an answer

5 Ns

500 Ns

200 Ns

800 N s

Simple harmonic motion is a type of

Choose an answer

rectilinear motion

Circular motion

Rotational motion

Zig Zag motion

The amplitude of a vibrating body placed in a resistive medium.

Choose an answer

Increases exponentially with time

Decreases exponentially with time

Remains constant with time

Cannot be observed

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

Choose an answer

The elongated tail

The stretched string of bow

The throw of archer

The sharp arrows head

In planetary motion

Choose an answer

Angular speed remains constant

Angular momentum remains constant

Linear speed remains constant

Linear momentum remains constant

The source of geothermal energy is

Choose an answer

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

When two vectors have opposite directions we say that they are

Choose an answer

Parallel

Antiparallel

Perpendicular

Out of phase

More Classes

Other Links

PPSC Physics Chapter 1 MECHANICS MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer