A nucleus with mass number $240$ breaks into two fragments each of mass number $120,$ the binding energy per nucleon of unfragmented nuclei is $7.6 \mathrm{MeV}$ while that of fragments is $8.5 \mathrm{MeV}$. The total gain in the binding energy in the process is :

For the given circuit, the input digital signals are applied at the terminals $A,B$ and $C$. What would be the output at the terminal $y$ ?

Consider the following statements (A) and (B) and identify the correct answer.

(A) A Zener diode is connected in reverse bias when used as a voltage regulator.
(B) The potential barrier of $\mathrm{p}-\mathrm{n}$ junction lies between $0.1 \mathrm{V}$ to $0.3 \mathrm{V}$.