Question

The binding energies of two nuclei Pⁿ and Q²ⁿ and x and y joules. If 2x > y then the energy released in the reaction Pⁿ + Pⁿ → Q²ⁿ, will be

(A) 2x + y 

(B) 2x – y

(C) –(2x – y) 

(D) x + y

Answer 1

Correct Answer is: (C) –(2x – y) 

Energy released = E_Q²ⁿ – 2 E_Pⁿ = y – 2x = – (2x – y)