Question

to get a diminished real and erect image where one could keep the the object in front of convex lens​

Answer 1

The question must be:

To get a diminished, real, and inverted image where the object could be placed before the convex lens.

To get a diminished, real, and inverted image can be obtained by placing the object at infinity.

Explanation:

• The convex mirror reflects light outwards which is why the image of the object is comparatively smaller than the actual size of the object. It is used in the doors of the house, vehicles to see the vehicles coming from behind.
• As per the question, In a convex lens, when the object is located at infinity, its image is formed at the principal focus.
• This image is formed much smaller than the actual object and becomes real and inverted.

Learn more: Types of images

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Answer 2

Answer:

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