MHT CET · Physics · Ray Optics
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
- A 1.5
- B 1.4
- C 1.45
- D 1.55
Answer & Solution
Correct Answer
(A) 1.5
Step-by-step Solution
Detailed explanation
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, \(\mu=1.5\)
\(
10=\frac{\mathrm{x}}{\mu}
\)
When viewed from opposite face
\(
6=\frac{24-x}{\mu}
\)
By solving, \(\mu=1.5\)
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