Question

The probability of spontaneous emission increases rapidly with the energy difference between the two states.

(a) True

(b) False

The question was asked by my school teacher while I was bunking the class.

I need to ask this question from Einstein Coefficients in division Laser of Engineering Physics II

Answer 1

The correct answer is (a) True

Explanation: From Einstein’s relation we know that the ratio of Einstein’s coefficients is (frac{8pi v^3 h}{c^3}). Thus, the ration of Einstein’s coefficients is proportional to the cube of the frequency. Hence, the probability of spontaneous emission increases rapidly with the energy difference between the two states.