A particle P moving with speed v undergoes a head -on elastic col… - Vidyadip

MCQ

A particle $P$ moving with speed $v$ undergoes a head -on elastic collision with another particle $Q$ of identical mass but at rest. After the collision

A
Both $P$ and $Q$ move forward with speed $\frac{v}{2}$
B
Both $P$ and $Q$ move forward with speed $\frac{v}{\sqrt{2}}$
✓
$P$ comes to rest and $Q$ moves forward with speed $v$
D
$P$ and $Q$ move in opposite directions with speed $\frac{v}{\sqrt{2}}$

✓

Answer

Correct option: C.

$P$ comes to rest and $Q$ moves forward with speed $v$

(c)

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 Work, Energy, Power and Collision→Work, Energy, Power and Collision — all question types→JEE physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

Plane figures made of thin wires of resistance $R=50 \mathrm{milli}$ ohm/metre are located in a uniform magnetic field perpendicular into the plane of the figures and which decrease at the rate $d B / d t=$ $0.1 \mathrm{~m} T / \mathrm{s}$. Then currents in the inner and outer boundary are. (The inner radius $a=10 \mathrm{~cm}$ and outer radius $b=20 \mathrm{~cm}$ )

Two planets move around the sun. The periodic times and the mean radii of the orbits are $T_1, T_2$ and $r_1, r_2$ respectively. The ratio $T_1 / T_2$ is equal to

One kilowatt hour is equal to

Two wires $A$ and $B$ are of same materials. Their lengths are in the ratio $1: 2$ and diameters are in the ratio $2: 1$ when stretched by force $F_A$ and $F_B$ respectively they get equal increase in their lengths. Then the ratio $F_A / F_B$ should be

A tangent galvanometer has a coil with 50 turns and radius equal to $4 \mathrm{~cm}$. A current of $0.1 \mathrm{~A}$ is passing through it. The plane of the coil is set parallel to the earth's magnetic meridian. If the value of the earth's horizontal component of the magnetic field is $7 \times 10^{-5}$ tesla and $\mu_0=4 \pi \times 10^{-7}$ weber / amp $\times m$, then the deflection in the galvanometer needle will be

As per given figure to complete the circular loop what should be the radius if initial height is $5 m$

Magnetic induction is a

A water drop takes the shape of a sphere in a oil while the oil drop spreads in water, because (A.F. $=$ adhesive force C.F. $=$ cohesive force)

A Carnot's engine is made to work between $200^{\circ} \mathrm{C}$ and $0^{\circ} \mathrm{C}$ first and then between $0^{\circ} \mathrm{C}$ and $-200^{\circ} \mathrm{C}$. The ratio of efficiencies of the engine in the two cases is

A particle executes linear simple harmonic motion with an amplitude of $2 cm$. When the particle is at $1 cm$ from the mean position the magnitude of its velocity is equal to that of its acceleration. Then its time period in seconds is