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Wave Optics

Question

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In a single slit diffraction experiment, the width of the slit is halved. How does it affect the size and intensity of the central maximum?

Solution

Size of central maximum

\propto \frac{λ}{a}

.
When, width of the slit is halved, size becomes double and intensity reduces to one-fourth.

Some More Questions From Wave Optics Chapter

Let us list some of the factors which could possibly influence the speed of wave propagation:
(i) nature of source.
(ii) direction of propagation.
(iii) motion of source and/or observer.
(iv) wave length.
(v) intensity of the wave.
On which of these factors, if any, does
(a) the speed of light in vacuum,
(b) the speed of light in a medium (say, the glass or water) depend?

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