Optics Question 468
Question: A plane wave front falls on a slit 0.4 mm wide. A convex lens of focal length 0.8 m placed behind the slit focusses the light on a screen. What is the linear diameter of second maximum?
Options:
A) 6 mm
B) 12 mm
C) 3 mm
D) 9 mm
Show Answer
Answer:
Correct Answer: A
Solution:
[a] For secondary maxima d