Speed of light travelling with a speed of 2 into 10 to the power 8 m per second in crown glass of refractive index 1.5 what is the speed of light in dense flint glass of refractive index 1.8
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Speed of light in water = 2×10to power 8
R.i of glass = 1.5
Vof air / V of glass= 1.5
V of air = 1.5 × 2 ×10to power 8
= 3×10to power 8
R.i of flint glass=1.8
V of air / v in flint glass=1.8
3×10to power 8/ 1.8= v in flint glass
V in flint glass= 1.67×10to power 8
( V is speed of light)
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