Science MCQ

The centrifugal force is ______.

Which of the following graph represents uniform motion of a moving particle?

Which one of the following is most likely not a case of uniform circular motion?

The area under velocity – time graph represents the

• velocity of the moving object.

• displacement covered by the moving object.

• speed of the moving object.

• acceleration of the moving object

The force responsible for drying clothes in a washing machine is …………….

Unit of acceleration is

A car is being driven at a speed of 20ms-1 when brakes are applied to bring it to rest in 5 s. The deceleration produced in this case will be

The area under the velocity-time graph represents

In a 100m race, the winner takes 10s to reach the finishing point. The average speed of the winner is

A body moving with an initial velocity 5ms-1 and accelerates at 2ms -2. Its velocity after 10s is

The magnitude of the centripetal force is given by (F= ….)

In the velocity-time graph, AB shows that the body has 

If the displacement-time graph of a particle is parallel to the time axis, then velocity of the particle is.

Distance travelled by a freely falling body is proportional to

When a body moves uniformly along the circle then

If a body starts from rest, what can be said about the acceleration of the body?

What is the slope of the body when it moves with uniform velocity?

Which of the following can determine the acceleration of a moving object.

The equation v = u + at gives information as

When an object undergoes acceleration

Acceleration is defined as the rate of change of

If the velocity of a body changes uniformly from u to v in time t, the sum of average velocity and acceleration is

If a moving body comes to rest, then its acceleration is

Choose the correct option.

A boy throws a ball up and catches it when the ball falls back. In which part of the motion the ball is accelerating?

A quantity has a value of 16ms-2. It is the

A bus accelerating with 4ms-2 changes its speed from 60ms_1 to a certain value in 5s. The final speed is

A quantity which has both magnitude and direction is

A body is said to be in non uniform motion if it travels

A man leaves his house at 6.30 a.m. for a morning walk and returns back at 7.30 a.m. after covering 4 km. Displacement covered by him is …………….

The displacement covered by a second hand of radius V in a clock after one revolution is

An ant moves from one corner of a room diagonally to the opposite corner. If the dimensions of the hall are 8m x 6m, the displacement of the ant is

Rest and motion of body are

Which of the quantities have the same SI unit?

Which of the following is correct about uniform circular motion
(i) direction of motion is continuously changed
(ii) direction of motion is not changed
(iii) speed and direction both remain constant
(iv) speed is constant but direction is changing

Statement A: Uniform circular motion is a case of accelerated motion
Statement B: In third equation of motion we do not have the term time

Speed of the body in particular direction can be called

A body moves in a uniform circular motion

The relation between displacemeñt and time is given by the equation of

The given graph represents motion with …………….speed.

When an object undergoes acceleration

The slope of the distance-time curve is steeper / greater is the

A car accelerates at 1.5m/s2in a straight road. How much is the increase in velocity in 4s.

A body is projected up with an initial velocity u m/s. It goes up to a height, ‘h’ metres in seconds time. Then it comes back at the point of projection. Considering negligible air resistance, which of the following statement is true?

A scalar quantity has T

The rate of change of displacement

The area under v-t graph represents a physical quantity which has the unit.

From the given v-t graph, u can be inferred that the object is

If the displacement of an object is proportional to square of time, then the object moves with