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Water (with refractive index = 4/3) in a...

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

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

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