Question 36

Water (with refractive index = $$\frac{4}{3}$$) in a tank is 18 cm deep. Oil of refractive index $$\frac{7}{4}$$ lies on water making a convex surface of radius of curvature ‘R = 6 cm’ as shown. Consider oil to act as a thin lens. An object ‘S’ is placed 24 cm above water surface. The location of its image is at ‘x’ cm above the bottom of the tank. Then ‘x’ is

Correct Answer: 2

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