Question:medium

A point object moves towards a concave mirror (f = 20 cm) at 4 cm/s. Find speed of image when object is at 60 cm.

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Use differentiation of mirror formula for velocity problems.

Updated On: Jun 17, 2026

3 cm/s
1 cm/s
2 cm/s
4 cm/s

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The Correct Option is C

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