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प्रश्न
The distance between an object and a convex lens is changing. It is noticed that the size of the image formed on a screen is decreasing. Is the object moving in a direction towards the lens or away from it?
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उत्तर
In the case of a convex lens, as the object moves away from it, the size of the image formed on a screen decreases.
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संबंधित प्रश्न
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A boy is standing in front of and close to a special mirror. He finds the image of his head bigger than normal, the middle part of his body of the same size, and his legs smaller than normal. The special mirror is made up of three types of mirrors in the following order from top downwards:
(a) Convex, Plane, Concave
(b) Plane, Convex, Concave
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(a) mirror A is concave and mirror B is convex
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(a) Draw a ray-diagram showing the formation image
(b) State two characteristics of the image formed
(c) Calculate the distance of the image from mirror.
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- image distance, and
- magnification, in each of the two cases.
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and moves towards ______.
