Question

image of an object placed in front of a convex lens is 0.8 times the height of object at a distance of 72 cm from the lens .find position of the object and focal length of the lens​

Answer 1

Answer:

image of an object placed in front of a convex lens is 0.8 times the height of object at a distance of 72 cm from the lens .find position of the object and focal length of the lens?

Explanation:

Using lens formula to find the position of object u. Therefore the object must be placed at a distance of 72 cm from the focal length of the lens. And the magnification of the image formed will be inverted this could be seen by the negative sign obtained.

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