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Single slit diffraction is completely immersed in water without changing any other parameter. How is the width of the central maximum affected?

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in Physics – Class 12 by (135k points)
Single slit diffraction is completely immersed in water without changing any other parameter. How is the width of the central maximum affected?

(a) Insignificant

(b) Increases

(c) Decreases

(d) Becomes  zero

I had been asked this question by my school principal while I was bunking the class.

This interesting question is from Wave Optics in portion Wave Optics of Physics – Class 12

1 Answer

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Best answer
The correct choice is (c) Decreases

For explanation: Wavelength of light in water decreases, so the width of the central maximum also decreases. This is the impact on the width of the central maximum when a single slit is completely immersed in water.

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