NEET 2012 Physics question

Physics Ray Optics and Optical Instruments NEET 2012

When a biconvex lens of glass having refractive index is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index

(1)less than that of glass
(2)equal to that of glassCorrect
(3)less than one
(4)greater than that of glass

Answer: (2)

Solution

By the lens-maker's formula, the focal length of a lens of refractive index in a medium of refractive index is . The lens behaves like a plane sheet (no converging or diverging action, ) when

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-091254