Questions
To increase both the resolving power and magnifying power of a telescope.
a
Both the focal length and aperture of the objective has to be increased
b
The focal length of the objective has to be increased
c
The aperture of the objective has to be increased
d
The wavelength of light has to be decreased
detailed solution
Correct option is A
Decreasing the wavelength of light, increases the resolving power and magnifying power of telescope.RP=a1.22λ m=-f0fe1+feDTalk to our academic expert!
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An astronomical telescope has a magnifying power 10. The focal length of eyepiece is 20 cm. The focal length of objective is
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