Question
Question: Focal length of a lens in air is f. Refractive index of the lens is m. Focal length changes to f<sub...
Focal length of a lens in air is f. Refractive index of the lens is m. Focal length changes to f1 if lens is immersed in a liquid of refractive index2μ and it becomes f2 if the lens is immersed in a liquid of refractive index 2m. Then –
A
f1 =
B
f2 = – 2f
C
f2 = –
D
Data is insufficient
Answer
Data is insufficient
Explanation
Solution
Without knowing the value of µ, we can't find out f1 and f2.