A planar structure of length L and width W is made of two different optical media of refractive indices hi = 1.5 and n 2 = 1.44 as shown in figure. If L>> W, a ray entering from end AB will emerge from end CD only if the total internal reflection condition is met inside the structure. For L = 9.6 m, if the incident angle 6 is varied, the maximum time taken by a ray to exit the plane CD is t x 10 -9 s, where t is________.
[Speed of light c = 3 x 10 8 m/s]
Text Solution
Verified by Experts50
(50)
total length for light to travel
time 
t=50.00
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