-
When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index.
-
- equal to that of glass
- less than one
- greater than that of glass
- less than that of glass
Correct Option: A
| = |  | - 1 |  | | - | | |||||
| f | μm | R1 | R2 |
| If µg = µm, then | = (1 - 1) | | - | | |||
| f | R1 | R2 |
| ⇒ | = 0 | |
| f |
| ⇒ f = | = ∞ | |
| 0 |
This implies that the liquid must have refractive index equal to glass.
