Q. The resolving power of an astronomical telescope is 0.2 seconds. If the central half portion of the objective lens is covered, the resolving power will be
A) $0.1\ sec$
B) $0.2\ sec$
C) $1.0\ sec$
D) $0.6\ sec$
Explanation
(a) Resolving power $= \frac{a}{1.22\lambda}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.