Q. A slit 5 cm wide is irradiated normally with microwaves of wavelength 1.0 cm. Then the angular spread of the central maximum on either side if incident light is nearly
A) 1/5 rad
B) 4 rad
C) 5 rad
D) 6 rad
Explanation
(a) Angular spread on either side is $\theta = \frac{\lambda}{a} = \frac{1}{5}\ rad$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.