Question

Diffraction of sound is very easy, to observe in day-to-day life. This is not so with light. This is so because

• A. ${\lambda }_S>{\lambda }_L$
• B. ${\lambda }_S<{\lambda }_L$
• C. light waves are transverse and sound waves are longitudinal
• D. ${\lambda }_S={\lambda }_L$

Answer 1

The correct option is A ${\lambda }_S>{\lambda }_L$

A wavelength of light ${\lambda }_L$ is comparable to the size of the obstacles while the wavelength of sound ${\lambda }_S$ is much greater than that of light and henceforth to that of the obstacle.