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JEE Main202329 Jan 2023Evening ShiftPhysicsRay OpticsActual

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

  1. AIncrease the wave length of the light
  2. BIncrease the refractive index of the medium between the object and objective lens
  3. CDecrease the focal length of the eye piece
  4. 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 ∝ μ sin θ λ . Therefore, as μ increases, P will increase.

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