Optics Question 211

Question: Conditions of diffraction is

[RPET 2001]

Options:

A) $ \frac{a}{\lambda }=1 $

B) $ \frac{a}{\lambda }»1 $

C) $ \frac{a}{\lambda }«1 $

D) None of these

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Answer:

Correct Answer: A

Solution:

For diffraction size of the obstacle must be of the order of wavelength of wave $ i.e. $

$ a\approx \lambda $



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