In the above question, the impulse acting on the object is - Vidyadip

MCQ

In the above question, the impulse acting on the object is

A
$120$ newton $\times \sec$
✓
$-120$ newton $\times \sec$
C
$30$ newton $\times \sec$
D
$-30$ newton $\times \sec$

✓

Answer

Correct option: B.

$-120$ newton $\times \sec$

Impulse $=$ Force $\times$ Time $=-30 \times 4=-120 \mathrm{~N}-\mathrm{s}$

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 "MCQ" from Newton's Laws of Motion→Newton's Laws of Motion — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The volume of a gas is reduced adiabatically to $\frac{1}{4}$ of its volume at $27^{\circ} \mathrm{C}$, if the value of $\gamma=1.4$, then the new temperature will be

If $\vec{P}=\vec{Q}$ then which of the following is NOT correct

In an ammeter $0.2\%$ of main current passes through the galvanometer. If resistance of galvanometer is $G,$ the resistance of ammeter will be

Focal length of a convex lens of refractive index $1.5$ is $2 \mathrm{~cm}$. Focal length of lens when immersed in a liquid of refractive index of $1.25$ will be

An electron is moving with constant velocity along $x$-axis. If a uniform electric field is applied along $y$-axis, then its path in the $x-y$ plane will be

The photo-electrons emitted from a surface of sodium metal are such that

If $ m$ is magnetic moment and $B$ is the magnetic field, then the torque is given by

An aeroplane is flying at a constant horizontal velocity of $600 km / hr$ at an elevation of $6 km$ towards a point directly above the target on the earth's surface. At an appropriate time, the pilot releases a ball so that it strikes the target at the earth. The ball will appear to be falling

The light reflected by a plane mirror may form a real image

The temperature at which a black body of unit area loses its energy at the rate of $1$ joule/second is