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NEET UG PHYSICS MCQ: WAVE OPTICS

1 Hard

1 of 1

Application +4 | -1

For what distance is ray optics a good approximation when the aperture is

3 \mathrm{~mm}

wide and wavelength is

500 \mathrm{~nm}?

View answer and explanation

Correct option: A

18 \mathrm{~m}

Option A (

18 \mathrm{~m}

) is correct because it is calculated using the Fresnel distance formula, which determines the distance for which ray optics is a good approximation.

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