A tank is filled with benzene to a height of $120 m m$ . The apparent depth of a needle lying at a bottom of the tank is measured by a microscope to be $80 m m$ . The refractive index of benzene is

1.5

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2.5

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3.5

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4.5

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Solution

The correct option is C $1.5$
As we know,
$μ = \frac{R e a l d e p t h}{a p p a r e n t d e p t h} = \frac{120}{80} = 1.5$

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A tank is filled with benzene to a height of 120 mm. The apparent depth of a needle lying at a bottom of the tank is measured by a microscope to be 80 mm. The refractive index of benzene is

The correct option is C 1.5As we know,μ=Real depthapparent depth=12080=1.5

A tank is filled with benzene to a height of $120 m m$ . The apparent depth of a needle lying at a bottom of the tank is measured by a microscope to be $80 m m$ . The refractive index of benzene is

The correct option is C $1.5$
As we know,
$μ = \frac{R e a l d e p t h}{a p p a r e n t d e p t h} = \frac{120}{80} = 1.5$