Statement-1: The resolving power of a telescope is more if the diameter of the objective lens is more.
Statement-2: Objective lens of large diameter collects more light.

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Statement-1 is true, Statement-2 is true; Statement-2 is not a correct explanation for Statement-1.

Statement-1 is false; Statement-1 is true.

Statement-1 is true, Statement-2 is true; Statement-2 is a correct explanation for Statement-1.

Statement-1 is true; Statement-1 is false.

answer is B.

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Detailed Solution

Resolving power of telescope $= \frac{a}{1 .22 λ}$
where a is the diameter of objective lens and $λ$ is the wavelength of light used. On increasing a, more light is collected by objective lens and so, the image formed is more bright.

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