Question

Resolving power of microscope depends upon

• A. wavelength of light used (directly proportional)
• B. wavelength of light used (inversely proportional)
• C. frequency of light used
• D. focal length of objective

Answer 1

The correct option is B

wavelength of light used (inversely proportional)

The explanation for the correct option:

In case of option B,

1. The ability of a microscope to distinguish between two lines or points in an object is a measure of its resolving power.
2. Resolving Power of microscope$=\frac{2n\sin \theta }{\lambda }$, where $\lambda =$wavelength, $n$ is the refractive index of the medium separating object and aperture, $\theta$ is the angular separation
3. Resolving Power is directly proportional to$\frac{1}{\lambda }$

Hence option B is the correct answer.