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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 collects more light.
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Reason : Objective lens of large diameter collects more light.
Solution:
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The correct answer is:
If both assertion and reason are true and reason is the correct explanation of assertion.
Resolving power of telescope
$$
R=\frac{1}{\Delta \theta}=\frac{a}{1.22 \lambda}
$$
Here $a$ is the diameter of the objective of the telescope.
$$
R=\frac{1}{\Delta \theta}=\frac{a}{1.22 \lambda}
$$
Here $a$ is the diameter of the objective of the telescope.
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