Question

100 points
You are given a concave mirror of focal length 10cm , a point source of light and a screen placed at distance 30cm in front of mirror. How can you obtain a bright patch of light on screen, of size equal to that of the aperture of mirror? Draw diagram to explain your answer

Answer 1

By placing the point source of light at the focus of the concave mirror, it is possible to obtain a bright patch on the screen, of size equal to that of the aperture of the mirror

【The completed ray diagram is shown in attachment】

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Answer 2

Explanation:

REFER to the attachment: