Modern Physics Multiple Choice Questions and Answers - 2

Question: 6

An atom bomb is based upon the principle of

(A) Controlled nuclear fission

(B) Nuclear fusion

(C) Nuclear fission

(D) None of the above

Question: 7

The mass defect per nucleon is called

(A) Binding energy

(B) Packing fraction

(C) Ionization energy

(D) Excitation energy

Question: 8

Nuclear forces are

(A) Attractive or repulsive depending upon separation between nucleons

(B) Neither attractive nor repulsive

(C) Attractive only

(D) Repulsive only

Question: 9

The fourth state of matter is known as

(A) Electrons

(B) Gas

(C) Vapour

(D) Plasma

Question: 10

If a U-238 nucleus splits into two identical parts, the two nuclei so produced will be

(A) Radioactive

(B) Stable

(C) Isobars

(D) Isotopes