Question

If a parallel beam of light of circular cross sectional having radius 10 millimetre falls on the surface of glass slab at an angle 30 degree with the surface of slab then the radius of refractive beam is about

Answer 1

The radius of the refracted beam  16.3 mm

Explanation:

• Refractive index of glass "μ" = 1.5
• Radius of incident beam "r" = 10 mm =0.01 m

Now

Radius of refracted beam "r" = 10 / sin(60°)/1.5

Radius of refracted beam "r" = 16.3 mm

Thus the radius of the refracted beam  16.3 mm

Also learn more

The refractive index of glass and water with respect to air are 3/2 and 4/3 respectively. if the speed of light in glass is 2×10 8^ m/s, find the speed of light in water. ?

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