Question # 1

The action and reaction forces

Choose an answer

Must act upon the same body

Must act upon different bodies

Must be equal in magnitude but need not have the same line of action.

Different speed at the different height during ascent and during descent.

Kinetic and potential energies are

Choose an answer

Not inter convertible

Inter convertible

Two forms of torque

Not related with each other

Time period of a simple pendulum depends upon.

Choose an answer

Thickness of the thread

Mass of the pendulum

Length of the pendulum

Amplitude of vibration

The SI unit of coefficient of viscosity of

Choose an answer

kg m s-1

kg m-1 s-1

kg ms -2

When a body is taken out of the earth's gravitational field, the P.E. with respect to earth is

Choose an answer

Zero

Minimum

Maximum

geothermal

The dimensions of universal gravitational constant G are.

Choose an answer

[MLT-2]

[ML -2T-2]

[M-1L2T-2]

[ML-1T-1]

The dimensions of moment of inertia are

Choose an answer

[ML2]

[MLT-1]

[ML2T-1]

[ML-1T-2]

The force of friction that comes into action after the motion has started

Choose an answer

Static friction

Dynamic friction

Friction only

Limiting friction

If an athlete uses 50 J of energy to lift a load in 2 s his muscular power is.

Choose an answer

125 W

250 W

500 W

1,000 W

The reluctance of a body to start moving is called.

Choose an answer

Mass

Weight

Force

Inertia

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

Choose an answer

Half

Constant

Double

One fourth

A car is travelling on a level highway at at speed of 15 m s-1. A braking force of 3,000 N brings the car to stop in 10 s The mass of the car is.

Choose an answer

1500 kg

2,000 kg

2,500 kg

3,000 kg

The unit formed by combining the fundamental untis of length , mass and time.

Choose an answer

Absolute units

Practical units

Bse unit

Derived units

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

A ball mass 0.25 kg is thrown to a height of 20 m The change in G.P.E is

Choose an answer

49 J

50 J

-75 J

500 J

The dimensions of work are

Choose an answer

[MLT-2]

[ML2T-2]

[ML2T-1]

[MLT-1]

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

Choose an answer

Moving with uniform velocity

Moving with variable velocity

Moving with uniform acceleration

at rest

The are between the velocity time graph and the time axis is numerically equal to.

Choose an answer

Distance moved by the object

Speed of the object

Velocity of the object

Acceleration of the object

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

Choose an answer

velocity

Displacement

Acceleration

Total energy

The resultant of two force 3 N and 4 N making an angle 90 ^o with each other is.

Choose an answer

1 N

3 N

5 N

10 N

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

Choose an answer

98 J

196 J

960 .4 J

1920 .8 J

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