Optics Question 940
Question: A concave mirror of focal length f (in air) is immersed in water ( $ \mu =4/3 $ ). The focal length of the mirror in water will be
[MNR 1998]
Options:
A) $ f $
B) $ \frac{4}{3} $ $ f $
C) $ \frac{3}{4}f $
D) $ \frac{7}{3} $ $ f $
Show Answer
Answer:
Correct Answer: A
Solution:
Focal length of the mirror remains unchanged.
