Class 7 Science MCQs – Certification Test 244

Refractive Index Quiz (Question 244) – App & e-Book Download

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MCQ: 244

'Refractive index' is equal to

speed of light in material /speed of light in vacuum
speed of light in material/speed of light in air
speed of light in vacuum/speed of light in material
speed of light in vacuum/speed of light in air

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