Question # 1

The condition of complete equilibrium is satisfied if.

Choose an answer

Vector sum of all the torques is zero

Vector sum of all the forces is zero

Vector sum of all the forces and torques is zero

Angular acceleration is zero

The magnitude of the instantaneous velocity is called the.

Choose an answer

_Displacement

Speed

Acceleration

Length

When a body acceleatres.

Choose an answer

Its direction always chances

It mass always changes

It velocity always changes

It falls towards the earth

Which one of the following pairs does not have the same dimensions.

Choose an answer

Force and weigfht

Pressure and stress

Capacitance and resistance

Energy and work

The cross product of two vectors is magnitude when

Choose an answer

Vectors are parallel

Vectors are antiparallel

Vectors are perpendicular

They are rotated through 270^o

In the absence of air resistance all objects regardless their weights, fall with

Choose an answer

Same velocity

Different velocity

Same acceleration

Different acceleration

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

If the resultant of all the forces acting on a body is zero then the body is in

Choose an answer

Translation equilibrium

Rotational equilibrium

Equilibrium

Dynamic equilibrium

A force of 20 N is applied on an elastic spring if the extension produced in the springs to cm, the value of spring constant.

Choose an answer

2 Nm-1

20 N m-1

200 N m-1

2,000 N m-1

Candela is the SI base unit of.

Choose an answer

illuminance

Luminous flux

Luminous intensity

Radiant energy

92.65 is round off as

Choose an answer

92.6

93.00

92.7

None of these

A body of mass 2 kg is suspended from the celling of an elevator moving up with an acceleration 'g' its apparent weight in the elevator will be.

Choose an answer

9.88 N

19.8 N

29.4 N

39. 2 N

Which of the following is non renewable source of energy.

Choose an answer

Wind

Coal

Hydroelectric

Biomass

In scientific notation 0.0003 can be written as.

Choose an answer

3 x 10⁴

3 x 10^-4

3.0 x 10³

3.0 x 10^-3

The point of which an applied force produces a linear acceleration but no rotation is called.

Choose an answer

Centre of the body

Centre of the mass

Centre of gravity

Weight of the body

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.

Choose an answer

0.67 m s-2

1.5 m s2

2.5 m s-2

6.0 m s-2

When a man jumps off the ground, the reaction force of the ground is.

Choose an answer

Equal to the weight of the man.

Smaller than the weight of the man

Greater than the weight of the man

Zero

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

The centre of gravity of a body is

Choose an answer

The centre of the body

The point at the mass of the body acts

The point at which the whole weight of the body acts

The point of rotation

When a force of 4 N acts on a body of mass 2 kg for a time of 2 s, the rate of change of momentum is.

Choose an answer

2 kg ms -1

4 kg ms-1

8 kg m s-1

16 kg m s-1

What would be the magnitude and direction of acceleration which would made the spring balance reading zero.

Choose an answer

Zero

1 m s-2 upward

9.8 m s-2 upward

9.8 m s-2 downward

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