Modern Physics Quiz Questions and Answers - 3

Question: 11

Nuclear forces are

(A) Long range

(B) Spin dependent

(C) Charge dependent

(D) None of these

Question: 12

The ionisation energy of sodium in KJ per mole is

(A) 496

(B) 596

(C) 4632

(D) 5926

Question: 13

In nuclear fission, the percentage of mass converted into energy is about

(A) 10%

(B) 0.01%

(C) 0.1%

(D) 1%

Question: 14

If alpha, beta and gamma rays carry same momentum, which has the longest wavelength?

(A) Gamma rays

(B) Alpha rays

(C) Beta rays

(D) None, all have same wavelength

Question: 15

When the speed of electrons increases, then the value of the specific charge on an electron

(A) Increases

(B) Decreases

(C) Remains unchanged

(D) None of these