A) decrease in wavelength of light and increase in numerical aperture
B) increase in wavelength of light and decrease in numerical aperture
C) increase in both wavelength of light and numerical aperture
D) decrease in both wavelength of light and numerical aperture
Correct Answer: A
Solution :
Resolving power or limit of resolution (Lm) is the ability to distinguish two closely placed objects as distinct. It is calculated by Abbe equation, .i.e.,\[{{L}_{m}}=\,\frac{0.61\,\lambda }{NA}\]\[\lambda \] is wavelength and NA is numerical aperture. Resolving power of compound microscope will increase with decrease in wavelength of light and increase in numerical aperture.
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