A transparent cube of 15 cm edge contains a small air bubble. Its apparent depth when viewed through one face is 6 cm and when viewed through opposite face is 4 cm. The refractive index of material of cube is

2.0

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1.5

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1.6

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2.5

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Solution

The correct option is B
1.5

$\frac{real depth}{apparent depth} = R . I (μ)$

$\frac{h_{1}}{6} = μ$

$h_{1} = 6 μ$

Similarly $\frac{h_{2}}{4} = μ$

$h_{2} = 4 m$

$h_{1} + h_{2} = 15 c m = 10 μ$

$μ = 1.5$

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A transparent cube of 15 cm edge contains a small air bubble. Its apparent depth when viewed through one face is 6 cm and when viewed through opposite face is 4 cm. The refractive index of material of cube is

The correct option is B 1.5 real depthapparent depth=R.I(μ) h16=μ h1=6μ Similarly h24=μ h2=4m h1+h2=15cm=10μ μ=1.5

The correct option is B
1.5

$\frac{real depth}{apparent depth} = R . I (μ)$

$\frac{h_{1}}{6} = μ$

$h_{1} = 6 μ$

Similarly $\frac{h_{2}}{4} = μ$

$h_{2} = 4 m$

$h_{1} + h_{2} = 15 c m = 10 μ$

$μ = 1.5$