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प्रश्न
In the following cases, where must an object be placed in front of a convex lens so that the image formed is of the same size as the object?
उत्तर
At 2F.
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संबंधित प्रश्न
A beam of light travelling in a rectangular glass slab emerges into air. Draw a ray-diagram indicating the change in its path.
Fill in the following blank with suitable word:
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0.15 m
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What happens to the image formed by a convex lens if its lower part is blackened?
In the figure given below L is a convex lens, M is a plane mirror and S is a point source of light. Rays of light from the source S return to their point of origin. Complete the ray diagram to show this. What is the point S called?
How will you determine the focal length of a convex lens by the plane mirror method?
