Q. To observe diffraction the size of an obstacle
A) Should be of the same order as wavelength
B) Should be much larger than the wavelength
C) Have no relation to wavelength
D) Should be exactly $\lambda/2$
Explanation
The correct answer is Option A: Should be of the same order as wavelength.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.