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MHT CET202620 April 2026Evening ShiftPhysicsWave OpticsActual

To improve the resolving power of a compound microscope we should

Options

  1. Adecrease the diameter of the objective lens.
  2. Bdecrease the focal length of the eye-piece.
  3. Cincrease the refractive index of the medium between the object and objective lens.
  4. Dincrease the wavelength of light.

Correct answer

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

Step-by-step solution

The resolving power of a compound microscope is given by the formula: Resolving Power = 2 where is the refractive index of the medium between the object and the objective lens, is the half-angle of the cone of light from the object to the objective lens, and is the wavelength of light used. To improve or increase the resolving power, one can: 1. Increase the refractive index of the medium. 2. Increase the angle (by increasing the diameter of the objective lens). 3. Decrease the wavelength of the light used. Therefo

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