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Assertion: The resolving power of a telescope is more if the diameter of the objective lens is more. Reason Objective lens of large diameter collectsmore light.

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Q. Assertion : Resolving power of a telescope is more if the diameter of the objective lens is more.
Reason : Objective lens of large diameter collects more light

Q. Assertion :The focal length of objective lens in telescope is much more than that of eye piece. Reason: Telescope has high resolving power due to large focal length.

Q. A telescope using light having wavelength

5000 A^{o}

and using lenses of focal

2.5

30 c m

. If the diameter of the aperture of the objective is

10 c m

, then the resolving limit and magnifying power of the telescope is respectively

Q. A telescope using light having wavelength

5000 ˚ A

and using lenses of focal lengths

2.5 cm

30 cm

. If the diameter of the aperture of the objective is

10 cm

, then the resolving power of the telescope is-

Q. Assertion :To increase resolving power of a telescope, the aperture (

a

) of the objective should be large. Reason: Resolving power of the telescope is given by

\frac{2 a}{1.22 λ}

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