Question

Spectroscopy deals with interaction of electromagnetic radiation with matter. What is the speed of this radiation in vacuum in m/s?

(a) 6 x 10^8

(b) 5 x 10^8

(c) 7 x 10^8

(d) 3 x 10^8

I had been asked this question by my school teacher while I was bunking the class.

This question is from Spectral Method of Analysis in chapter Colorimetry and Spectrometry of Analytical Instrumentation

Answer 1

Correct answer is (d) 3 x 10^8

Explanation: Speed of light is also the speed of all electromagnetic radiations. Speed of light is 3 x 10^8m/s.