AP EAMCET · PHYSICS · Wave Optics
A light ray of wavelength \(\lambda\) is passing through a pin hole of diameter \(D\) and the effect is observed on a screen placed at a distance \(L\) from the pin hole. The approximations of geometrical optics are applicable, if
- A \(D \leq \lambda\)
- B \(\frac{L \lambda}{D^2}=1\)
- C \(\frac{L \lambda}{D^2}< < 1\)
- D \(\frac{L \lambda}{D^2}>>1\)
Answer & Solution
Correct Answer
(C) \(\frac{L \lambda}{D^2}< < 1\)
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