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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a
Statement-1 is true, Statement-2 is true; Statement-2 is a correct explanation for Statement-1.
b
Statement-1 is true, Statement-2 is true; Statement-2 is not a correct explanation for Statement-1.
c
Statement-1 is true; Statement-1 is false.
d
Statement-1 is false; Statement-1 is true.
answer is B.
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Detailed Solution
Resolving power of telescope =a1.22λwhere 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.