In the formula for resolving power of microscope, the numerical aperture is represented by

In the formula for resolving power of microscope, the numerical aperture is represented by
  1. $\frac{2 \mu \sin \alpha}{\lambda}$
  2. $\frac{2 \sin \alpha}{\mu \lambda}$
  3. $\mu \sin \alpha$
  4. $\frac{\lambda}{2 \mu \sin \alpha}$

Solution

$NA=n \sin \theta$

Asked in: MHT CET 2020 (15 Oct Shift 1)

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