i. X-rays
ii. Kinetic energy of thermo electrons
iii. Potential energy of the target atoms
iv. Heat energy of the emitted electrons
A. iv, iii, ii, i
B. ii, iv, iii, i
C. iv, ii, iii, i
D. iii, iv, ii, i
Correct Answer: Option A
A. iv, iii, ii, i