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Which is optically denser: water or air? Give reason - Physics

Short Note

Which is optically denser: water or air? Give reason

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Solution

Denser medium are those in which speed of light gets reduced when light travels through that medium.
when light travels through water or glass it's speed get reduced hence they are optically denser medium.

WATER is optically DENSER as the speed of light is less in water than in air.
2.25 × 108 ms-1   <   3 × 108 ms-1
speed of light in Water < speed of light in Air.

Concept: Dispersion of White Light into Constituent Colours
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APPEARS IN

Selina Concise Physics Class 8 ICSE
Chapter 5 Light Energy
Short/long Answer Question | Q 3 | Page 99
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