The focal length of a convex lens of `R.I. 1.5` is `f` when it is placed in air. When it is immersed in a liquid is behaves as a converging lens its focal length becomes `xf(x gt 1)`. The refractive index of the liquid
A
`gt 3//2`
B
`lt (3//2)` and `gt 1`
C
`lt 3//2`
D
All of these
Text Solution
AI Generated Solution
To solve the problem, we will use the lens maker's formula and the properties of lenses in different media.
### Step-by-Step Solution:
1. **Understanding the Given Information**:
- The focal length of a convex lens in air is denoted as \( f \).
- The refractive index of the lens is \( n_l = 1.5 \).
- When the lens is immersed in a liquid, its focal length becomes \( f' = xf \), where \( x > 1 \).
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