Optics Question 216

Question: What will be the angular width of central maxima in Fraunhoffer diffraction when light of wavelength 6000AA is used and slit width is 12×105cm.

[RPMT 2004]

Options:

A) 2 rad

B) 3 rad

C) 1 rad

D) 8 rad

Show Answer

Answer:

Correct Answer: C

Solution:

Angular width =2λd=2×6000×101012×105×102=1rad.



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