Question

UV) constantly changes
2. (a) The focus distance of a convex lens is 20 cm. How
far away is an object to place from this lens so that its reflec-
tion is 2 times larger than the object, while the reflection is
real ?
in​

Answer 1

Answer:

Given that there is a convex lens. Since, the image is real, therefore magnification will be negative. Hence, object should be placed at a distance of 30 cm from the optical center of the convex lens.

Answer 2

Answer:

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