Question

a glass slab of thickness 2.5 cm and refractive index 5/3 is kept on ink spot. a transparent beaker of very thin bottom containing water of refractive index 4/3 upto 8 cm is kept on glass then what is apparent depth

Answer 1

Answer:

7.5 cm

Explanation:

Given A glass slab of thickness 2.5 cm and refractive index 5/3 is kept on ink spot. a transparent beaker of very thin bottom containing water of refractive index 4/3 upto 8 cm is kept on glass then what is apparent depth

Given h’ = d1 / μ1 + d2 / μ2

              = 2.5 / 5/3 + 8 / 4/3

             = 1.5 + 6

             = 7.5 cm

The ink spot is seen at the depth of 7.5 cm