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A concave mirror of radius of curvature 60cm is placed at the bottom of a tank containing water up to a height of 20cm. The mirror faces upwards with its axis vertical. Sunlight falls normally on the surface of the water and the image of the sun is formed. If refractive index of water is 43 then with the observer in air, the distance of the image from the surface of water is |
| Answer» A concave mirror of radius of curvature 60cm is placed at the bottom of a tank containing water up to a height of 20cm. The mirror faces upwards with its axis vertical. Sunlight falls normally on the surface of the water and the image of the sun is formed. If refractive index of water is 43 then with the observer in air, the distance of the image from the surface of water is | |