Optics Question 219
Question: If we observe the single slit Fraunhofer diffraction with wavelength l and slit width e, the width of the central maxima is 2q. On decreasing the slit width for the same l
[UPSEAT 2004]
Options:
A) q increases
B) q remains unchanged
C) q decreases
D) q increases or decreases depending on the intensity of light
Show Answer
Answer:
Correct Answer: A
Solution:
$ 2\theta =\frac{2\lambda }{d} $ (where d = slit width) As d decreases, q increases.
BETA
