Questions
In an optical fibre, core and cladding were made materials of refractive indices 1.5 and 1.414 respectively. to observe total internal reflection, what will be the range of incident angle with the axis of optical fibre?
detailed solution
Correct option is C
The range of incident anglesinθ=μ12−μ22μ0θ=sin−1(1.5)2−(1.414)2 [for air μ0=1]θ=sin−1(0.5006)θ=300Hence, option (c) is correct.Talk to our academic expert!
Similar Questions
A light ray from air is incident (as shown in figure) at one end of a glass fiber (refractive index = 1.5) making an incidence angle of 60° on the lateral surface, so that it undergoes a total internal reflection. How much time would it take to traverse the straight fiber of length 1 km
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