Conditions of diffraction is

Conditions of diffraction is
  1. $\frac{a}{\lambda} \neq 1$
  2. $\frac{a}{\lambda}>>1$
  3. $\frac{a}{\lambda}< < 1$
  4. $\frac{a}{\lambda} \leq 1$

Solution

For diffraction, the width $a$ of slit must be less than or comparable to wavelength of light used. i.e., $ \frac{a}{\lambda} \leq 1 $

Asked in: AP EAMCET 2020 (22 Sep Shift 2)

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