Question

Write the following steps of the liquid drop model in sequential order to show the various stages of a nuclear fission reaction.
(a) During the bombardment of a nucleus by neutrons, a neutron could be absorbed by the drop like the nucleus.
(b) A heavy nucleus is treated as the drop of a liquid with the positive charge uniformly distributed.
(c) This leads to the disturbance of the internal forces and sets up oscillations.
(d) From this stage the repulsive forces take over causing the fission of the nucleus.
(e) These oscillations lead to the development of a thick neck forming two parts, giving the nucleus and elongated shape.

• A. b c e a d
• B. a c e d b
• C. a d c e b
• D. b a c e d

Answer 1

The correct option is D b a c e d

The liquid drop model is the theoretical work of Bohr and Wheeler in 1939. The various stages of nuclear fission reaction is nucleus is like +ve charged drop of liquid and when we bombarded neutrons, drop absorbed all of them. So internal forces get disturbed which makes oscillations and drop get divided in two parts. Which results nuclear fission reaction.

Hence option 'D' is correct.