When a body moves in a circular path, no work is done by the forc… - Vidyadip

MCQ

When a body moves in a circular path, no work is done by the force since,

A
There is no displacement
B
There is no net force
✓
Force and displacement are perpendicular to each other
D
The force is always away from the centre

✓

Answer

Correct option: C.

Force and displacement are perpendicular to each other

c
(c) $W = FS\cos \theta\,⇒ \theta = 90^°$

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

NEET STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Hook's law defines

$\gamma$-decay occurs when

The escape velocity for the earth is ${v_e}$. The escape velocity for a planet whose radius is four times and density is nine times that of the earth, is

A person standing on a rotating platform has his hands lowered. He suddenly outstretch his arms. The angular momentum

A $2100 W$ continuous flow geyser (instant geyser) has water inlet temperature $= 10^o C$ while the water flows out at the rate of $20\,\, g/sec$. The outlet temperature of water must be about ....... $^oC$

An unpolarised light beam strikes a glass surface at Brewster's angle. Then

According to the quantum theory, a photon of electromagnetic radiation of frequency $v$ has energy $E=h v$, where $h$ is known as Planck's constant. According to the theory of relativity, a particle of mass $m$ has equivalent energy $E=m c^2$, where $c$ is speed of light. Thus, a photon can be treated as a particle having effective mass $m=\frac{h v}{c^2}$ If a flash of light is sent horizontally in earth's gravitational field, then photons while travelling a horizontal distance $d$ would fall through a distance given by

The velocity of a particle depends upon as $v = a + bt + c{t^2}$; if the velocity is in $m/\sec $, the unit of $a$ will be

An experiment is performed to determine the $I-V$ characteristics of a Zener diode, which has a protective resistance of $R = 100 \,\Omega ,$ and a maximum power of dissipation rating of $1\,W$ .The minimum voltage range of the $DC$ source in the circuit is

Four metal conductors having different shapes

$1.$ A sphere $2.$ Cylindrical

$3.$ Pear $4.$ Lightning conductor

are mounted on insulating stands and charged. The one which is best suited to retain the charges for a longer time is