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A 4 cm diameter beam of light is incident on the surface of a transparent sphere of radius as shown in figure. If the beam converges at point B as shown in figure, the refractive index of the material of the sphere is
detailed solution
Correct option is C
In ΔPOB, r+r=i⇒r=i2In ΔPOQ, PQOP=sin i⇒sini=32⇒i=60oBy snell's law, sini=μsinr⇒μ=sin isin i/2=2cosi2=2cos30o⇒μ=3Talk to our academic expert!
Similar Questions
A convex lens is at a distance of 10 cm from a convex mirror of focal length 10 cm as shown in figure. A beam of light parallel to the principal axis is incident on the tens. After refraction through the lens, reflection at the mirror and again refraction through the lens, the final emergent beam refraces the path of the incident beam then focal length of the lens is
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