Question 339: Wave Optics

Question

A person is observing a bacteria through a compound microscope. For better observation and to improve its resolving power he should

Accepted Answer

Resolving Power $$R=\frac{	ext { N.A }}{0.61 \lambda}$$
N.A $$=2 \mathrm{n} \sin \alpha$$
$$	herefore$$ By increasing the refractive index of the medium between the subject and the objective lens, the resolving power can be increased.

Answer

increase the wavelength of light.

Answer

increase the refractive index of the medium between the object and objective lens.

Answer

decrease the focal length of the eyepiece.

Answer

decrease the diameter of the objective lens.

Wave Optics

A person is observing a bacteria through a compound microscope. For better observation and to improve its resolving power he should

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