Q. The number of waves contained in unit length of the medium is called
A) Elastic wave
B) Wave number
C) Wave pulse
D) Electromagnetic wave
Explanation
(b) Wave number is the reciprocal of wavelength and is written as $\overline{n} = \frac{1}{\lambda}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.