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Geometrical Optics question

2019 · Shift 1 · Q50
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Geometrical Optics question

2019 · Shift 1 · Q50

JEE AdvancedPhysicsGeometrical OpticsNumerical+3 / −1
A planar structure of length L and width W is made of two different optical media of refractive indices n1 = 1.5 and n2 = 1.44 as shown in figure. If L >> W, a ray entering from end AB will emerge from end CD. CD only if the total internal reflection condition is met inside the structure. For L = 9.6 m, if the incident angle θ\thetaθ is varied, the maximum time taken by a ray to exit the plane CD is t ×\times× 10-9 s, where, t is ................ [Speed of light, c = 3 ×\times× 108 m/s] JEE Advanced 2019 Paper 1 Offline Physics - Geometrical Optics Question 55 English
Numerical answer
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