Q126 / 150 · MHT CET 2021 (21 Sep Shift 1) · Physics

A glass cube of length $24 \mathrm{~cm}$ has a small air bubble trapped inside. When viewed normally from one face it is $10 \mathrm{~cm}$ below the surface. When viewed normally from the opposite face, its apparent distance is $6 \mathrm{~cm}$. The refractive index of glass is

  • Correct answer
    A
    1.50
  • B
    1.40
  • C
    1.45
  • D
    1.55

Solution

Let $\mathrm{x}$ be the real depth from first surface $$ 10=\frac{\mathrm{x}}{\mu} $$ When viewed from opposite face $$ 6=\frac{24-x}{\mu} $$ By solving, $\mu=1.5$

Hence, the correct answer is option: 'A'.

Relevant Questions