In a given medium, the speed of light is half of its speed in vacuum. The refractive index of the medium is:

[0.8 mark]

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1.5

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1.25

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Solution

The correct option is A 2
Refractive index is the ratio of speed of light in vacuum to the speed of light in the medium.
$μ = \frac{c}{c / 2}$
$μ = 2$

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In a given medium, the speed of light is half of its speed in vacuum. The refractive index of the medium is: [0.8 mark]

The correct option is A 2Refractive index is the ratio of speed of light in vacuum to the speed of light in the medium. μ = cc/2 μ = 2

In a given medium, the speed of light is half of its speed in vacuum. The refractive index of the medium is:

[0.8 mark]

The correct option is A 2
Refractive index is the ratio of speed of light in vacuum to the speed of light in the medium.
$μ = \frac{c}{c / 2}$
$μ = 2$