In case of diffraction 1 if ' $a$ ' is a slit width and 1 is the wavelength of the incident light, then the…

In case of diffraction 1 if ' $a$ ' is a slit width and 1 is the wavelength of the incident light, then the required condition for diffraction to take place is
  1. $\frac{a}{\lambda}=1000$
  2. $\frac{a}{\lambda} \leq 1$
  3. $a \ll 1$
  4. $a \gg 1$

Solution

Condition for diffraction is
Slit width $\leq$ wavelength of light $\Rightarrow \mathrm{a} \leq \lambda \quad \therefore \frac{\mathrm{a}}{\lambda} \leq 1$

Asked in: AP EAMCET 2024 (21 May Shift 2)

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