Question

how do you form a diminished image by a concave mirror on a screen​

Answer 1

Answer:

If the object is placed beyond the radius of curvature of the concave mirror , the image formed will be real , inverted and diminished

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Answer 2

Answer:

We can form a diminished image by a concave mirror on a screen by:

• keeping the object at infinity. The image will be diminished to a point and its position will be at the focus.
• keeping the object at very far distance. The image will be highly diminished and the position of image will be in focal plane.
• keeping the object beyond the centre. The image will be diminished and the position of image will be between the centre of curvature and focus.

In all these three cases, the image will be real and inverted.