Question

between which two points related to a concave mirror should an object be placed to obtained on a screen and image size size of the object

Answer 1

at the centre of curvature and upper of the principle axis
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Answer 2

Answer:

Between which two points related to a concave mirror should an object be placed to obtain on a screen an image twice the size of the object?

Explanation:

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The object should be placed between F (focus) and C (centre of curvature) to obtain an image twice the size of the object.

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