A mirage seen on a hot road is caused by

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More Light: refraction questions

• The critical angle for glass of refractive index 1.5 is about
• A pool is 20 cm deep. Find its apparent depth when viewed from above. (Refractive index of water = 1.33)
• Optical fibres carry light by
• A coin lies at the bottom of a tank of water 12 cm deep. Find its apparent depth. (Refractive index of water = 4/3)
• An object is placed 30 cm from a converging lens of focal length 10 cm. The image distance is: