$A$ person is observing a bacteria through a compound microscope. For better analysis and to improve the resolving power,he should:

  • A
    increase the wavelength of light.
  • B
    increase the refractive index of the medium between the object and objective lens.
  • C
    decrease the focal length of the eye-piece.
  • D
    decrease the diameter of the objective lens.

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Similar Questions

There are two white dots on a black paper separated by a distance of $1 \, mm$. They are observed by the naked eye. If the diameter of the eye lens is $3 \, mm$,what is the maximum distance between the dots and the eye so that they can be seen as separate (in $, m$)? The wavelength of light is $500 \, nm$.

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The limit of resolution of a telescope is $2.5 \times 10^{-7} \text{ rad}$. If the telescope is used to detect light of wavelength $500 \text{ nm}$ coming from a star, the diameter of the objective lens used by the telescope is: (in $\text{ cm}$)

Resolving power of a telescope can be increased by increasing

The diameter of the objective lens of a telescope is $250\, cm$. For light of wavelength $600\, nm$ coming from a distant object, the limit of resolution of the telescope is close to:

The diameter of the objective of a telescope is $3.6 \ m$. The limit of resolution of the telescope for a light of wavelength $540 \ nm$ is

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