Question

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R

Assertion (A) : To increase resolving power of a telescope, the aperture \((a)\) of the objective should be large. 

Reason (R) : Resolving power of the telescope is given by \(\frac{2 a}{1.22 \lambda}\).

In the light of the above statements, choose the correct answer from the options given below

• A. If both Assertion and Reason are true and Reason is correct explanation of Assertion.
• B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
• C. If Assertion is true but Reason is false.
• D. If both Assertion and Reason are false.

Answer 1

The Correct Option is C

Larger the aperture, higher will be the light gathering power. Also resolving power $=\frac{a}{1.22 \lambda}$ where, $a=$ aperture of the objective.