Question

draw a ray diagrams and apply Cartesian sign convention for calculating the focal length and nature of a spherical mirror which forms a 3 times magnifjned virtual image of an object palced at 18 cm in front of it​

Answer 1

Answer:

Since the image formed is magnified and virtual, the mirror is convex. Thus the focal length of the mirror is 9 cm. An object is placed at 20 cm from a concave mirror of focal length 10 cm.

Explanation:

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