Q. Which one is correct about fission?
A) Approx 0.1 % mass converts into energy
B) Most of energy of fission is in the form of heat
C) In a fission of $U^{235}$ about 200$\ eV$ energy is released
D) On an average, one neutron is released per fission of $U^{235}$
Explanation
(a) (i) When$\ _{92}U^{235}$ undergoes fission, 0.1 % of its original mass is changed into energy.
(ii) Most of energy released appears in the form of kinetic energy of fission fragments.
(iii) The energy released in $U^{235}$ fission in about 200 MeV.
(iv) By fission of$\ _{92}U^{235}$$_{,}$ on the average 2.5 neutrons are liberated.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.