Question 229: Wave Optics

Question

Resolving power of a telescope can be increased by increasing

Accepted Answer

The resolving power $ R $ of a telescope depends mainly on the
objective lens/mirror
and is given (approximately) by the Rayleigh criterion:
$ 	heta \approx 1.22 \frac{\lambda}{D} $
where
$ 	heta $ = minimum resolvable angle (smaller means better resolving power),
$ \lambda $ = wavelength of light used,
$ D $ = diameter of the objective lens or mirror.
Thus, increasing the
diameter of the objective
improves the resolving power.
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Correct Answer: Option D Ã¢ÂÂ the diameter of the objective.

Answer

the diameter of eyepiece.

Answer

the wavelength of light.

Answer

the focal length of eye-piece.

Answer

the diameter of the objective.

Wave Optics

Resolving power of a telescope can be increased by increasing

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