Question

Assertion (A) : Due to annihilation of electron positron pair, at least 2 $\gamma$-ray photons are produced.
Reason (R) : This is in accordance with conservation of linear momentum.

• A. Both A & R are true and R is the correct explanation of A
• B. Both A & R are true and R is not correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

Answer: (A)

Both A & R are true and R is the correct explanation of A

$e^{-}+e^{+}\Rightarrow \gamma +\gamma$
This annihilation is in accordance to three laws:-
1] conservation of linear momentum
2] conservation of charge
3] conservation of angular momentum
Two $\gamma$ ray photons are released on annihilation of electron and positron.