Question

Infrared and Raman spectra are complementary to each other.

(a) True

(b) False

This question was addressed to me in an interview for job.

This is a very interesting question from Raman Effect topic in chapter Quantum Physics of Engineering Physics I

Answer 1

Right choice is (a) True

To explain: The given statement is true because of their different selection rules for activity. A change in polarizability must occur for a vibration to be Raman-active, but for a vibration o be Infrared-active, there should be a change in dipole moment.