If a constant force acts on a particle, its acceleration will: - Vidyadip

MCQ

If a constant force acts on a particle, its acceleration will:

A
Remain constant.
✓
Gradually decrease.
C
Gradually increase.
D
Be undefined.

✓

Answer

Correct option: B.

Gradually decrease.

If a constant force is acting on a particle, the force will tend to accelerate the particle and increase its speed. But, due to increase in speed, the mass of the particle will increase by the relation $\text{m}=\frac{\text{m}_0}{\sqrt{1-\frac{\text{v}^2}{\text{c}^2}}}$
leading to decrease in acceleration as constant force is acting. Therefore, after sometime its acceleration will start decreasing gradually.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "1 Marks Question" from The Special Theory of Relativity→The Special Theory of Relativity — all question types→Physics STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

For most of the surfaces used in daily life, the friction coefficient is less than 1. Is it always necessary that the friction coefficient is less than 1?

A gas is kept in a rigid cubical container. If a load of 10kg is put on the top of the container, does the pressure increase?

What is gauge pressure?

Two blocks A and B of mass $m_A$ and $m_B$ respectively are kept in contact on a frictionless table. The experimenter pushes the block A from behind so that the blocks accelerate. If the block A exerts a force F on the block B, what is the force exerted by the experimenter on A?

Which type of substances are called elastomers? Give one example.

A driver wearing an electronic digital watch goes down into sea water with terminal velocity v. How will the time in the water proof watch be affected?

A cylindrical wooden block of cross-section $15.0 \mathrm{~cm}^2$ and mass 230 gm is floated over water with an extra weight 50 gm attached to its bottom. The cylinder floats vertically. From the state of equilibrium, it is slightly depressed and released. If the specific gravity of wood is 0.30 and $\mathrm{g}=9.8 \mathrm{~m}$ per $\mathrm{sec}^2$, find the frequency of oscillation of the block.

Value of g is largest at the poles due to _________.

Is Newton's law of motion applicable for material waves? Is this applicable for electromagnetic waves?

If the length of the capillary tube is less than required, will the water flow out of it?