If the refractive index of second medium with respect to first medium is n 1 2 and that of third medium with respect to second medium is n 2 3 , what and how much is n 1 3 ?

Given that, The relative refractive index of the second medium with respect to the first medium is n 1 2 = v 1 v 2 where v 1 is the speed of light in the first medium and v 2 is the speed of light in the second medium. Similarly, the relative refractive index of the third medium with respect to the second medium is n 2 3 = v 2 v 3 where v 2 is the speed of light in the second medium and v 3 is the speed of light in the third medium. Then, n 1 3 is the relative refractive index of the third medium with respect to the first medium and is n 1 3 = n 2 3 n 2 1 = n 2 3 1 n 1 2 = v 2 v 3 1 v 1 v 2 = v 2 v 3 × v 1 v 2 = v 1 v 3 . Thus, n 1 3 = v 1 v 3 .

If the refractive index of second medium with respect to first medium is n 1 2 and that of third medium with respect to second medium is n 2 3 , what and how much is n 1 3 ?

Given that, The relative refractive index of the second medium with respect to the first medium is n 1 2 = v 1 v 2 where v 1 is the speed of light in the first medium and v 2 is the speed of light in the second medium. Similarly, the relative refractive index of the third medium with respect to the second medium is n 2 3 = v 2 v 3 where v 2 is the speed of light in the second medium and v 3 is the speed of light in the third medium. Then, n 1 3 is the relative refractive index of the third medium with respect to the first medium and is n 1 3 = n 2 3 n 2 1 = n 2 3 1 n 1 2 = v 2 v 3 1 v 1 v 2 = v 2 v 3 × v 1 v 2 = v 1 v 3 . Thus, n 1 3 = v 1 v 3 .

E M B I B E

Science and Technology Standard Ten Part - 1>Chapter 6 - Refraction of Light>Can you tell?>Q 1

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10th Maharashtra Board

IMPORTANT

Earn 100

If the refractive index of second medium with respect to first medium is ${}_{2}n_{1}$ and that of third medium with respect to second medium is ${}_{3}n_{2}$ , what and how much is ${}_{3}n_{1}$ ?

Important Questions on Refraction of Light

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10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 6 - Refraction of Light>Can you tell?>Q 1

Have you seen a mirage which is an illusion of the appearance of water on a hot road or in a desert?

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IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 6 - Refraction of Light>Can you tell?>Q 2

Have you seen that objects beyond and above a holy fire appear to be shaking? Why does this happen?

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10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 6 - Refraction of Light>Use your brain power!>Q 1

From incident white light how will you obtain white emergent light by making use of two prisms?

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10th Maharashtra Board

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Science and Technology Standard Ten Part - 1>Chapter 6 - Refraction of Light>Use your brain power!>Q 2

You must have seen chandeliers having glass prisms. The light from a tungsten bulb gets dispersed while passing through these prisms and we see coloured spectrum. If we use an LED light instead of a tungsten bulb, will we be able to see the same effect?

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10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 6 - Refraction of Light>Exercise>Q 1

Refractive index depends on the _____ of light. (velocity/intensity)

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10th Maharashtra Board

IMPORTANT

Science and Technology Standard Ten Part - 1>Chapter 6 - Refraction of Light>Exercise>Q 1

The change in _____ of light rays while going from one medium to another is called refraction.

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10th Maharashtra Board