Optics Question 884
Question: The box of a pin hole camera, of length L, has a hole of radius a. It is assumed that when the hole is illuminated by a parallel beam of light of wavelength
Options:
A)
B)
C)
D)
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Given geometrical spread=a Diffraction spread
The sum
For b to be minimum
