Question 198: Waves Optics

Question

In a single slit experiment, a parallel beam of green light of wavelength $$550 \mathrm{~nm}$$ passes through a slit of width $$0.20 \mathrm{~mm}$$. The transmitted light is collected on a screen $$100 \mathrm{~cm}$$ away. The distance of first order minima from the central maximum will be $$x 	imes 10^{-5} \mathrm{~m}$$. The value of $$x$$ is :

Accepted Answer

$$\begin{aligned}
y & =\frac{n \lambda D}{a} \
& =\frac{1 	imes\left(550 	imes 10^{-9}ight)(1)}{\left(0.2 	imes 10^{-3}ight)} \
& =275 	imes 10^{-5} \mathrm{~m}
\end{aligned}$$

Waves Optics

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