MCQ
Work is always done on a body when
- Aa force acts on body to displace it.
- Bit moves through a certain distance.
- Cit experiences an increase in energy through a mechanical influence.
- Dthere is no displacement.
✓
Answer
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
The kinetic energy $\left(E_k\right)$ of a particle moving along X-axis varies with its position (X) as shown in the figure. The force acting on the particle at X = 10 m is
→A 150 m long train is travelling from east to west at a speed of 20 m/s. A bird is flying from west to east at a speed of 5 m/s. How long will the bird take to cross the train?
A man can jump on the moon _____________ times as high as on the earth.
When sound waves travel from air to water, which of these remains constant ?
The escape velocity of a planet having mass 6 times and radius 2 times as those of the earth is
The acceleration a of a particle starting from rest varies with time, according to relation $a =\alpha t +\beta$. The velocity of the particle after a time t will be
→If the force applied to a body produces rotational motion in an anticlockwise sense, the moment of the force is considered as ______________ .
The angle of dip at the equator is
Two point charges +4 µC and +2 µC repel each other with a force of 8 N. If a charge of -4 µC is added to each of these charges, the force would be
The equation of motion of a projectile is $y=a x-b x^2$ where a and b are constants of motion. The horizontal range of the projectile is.
→