Q.
If the space between the lenses in the lens combination shows were filled with water, what would happen to the focal length and power of the lens combination?
Focal Length Power
A) Decreased Increased
B) Decreased Unchanged
C) Increased Unchanged
D) Increased Decreased
Explanation
(d) $P = (\mu - 1)\left( \frac{1}{R_{1}} - \frac{1}{R_{2}} \right)$
$\mu$ decreases, $P$ decreases and $f\ $increases
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.