Optics Question 934
Question: A point object is placed at a distance of 30 cm from a convex mirror of focal length 30cm. The image will form at
[JIPMER 2002]
Options:
A) Infinity
B) Focus
C) Pole
D) 15 cm behind the mirror
Show Answer
Answer:
Correct Answer: D
Solution:
$ u=-30cm, $
$ f=+30cm, $ by using mirror formula $ \frac{1}{f}=\frac{1}{v}+\frac{1}{u}\Rightarrow \frac{1}{+30}=\frac{1}{v}+\frac{1}{(-30)} $
$ v=15cm, $ behind the mirror
