A scientist is observing a bacteria through a compound microscope....

A scientist is observing a bacteria through a compound microscope. For better analysis and to improve its resolving power he should. (Select the best option)

Options

AIncrease the wave length of the light
BIncrease the refractive index of the medium between the object and objective lens
CDecrease the focal length of the eye piece
DDecrease the diameter of the objective lens

Correct answer

B. Increase the refractive index of the medium between the object and objective lens

Step-by-step solution

As we know resolving power $P ∝ \dfrac{\mu sin\theta}{\lambda}$ .

Therefore, as $\mu$ increases, $P$ will increase.

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