Question
Physics Question on Ray optics and optical instruments
A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by
A
15
B
20
C
30
D
0
Answer
0
Explanation
Solution
The correct option is (D): 0
A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by
15
20
30
0
0
The correct option is (D): 0