A pencil (PQ ) of length 20 cm is moving along the principal axis of a concave mirror M

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A pencil (PQ ) of length 20 cm is moving along the principal axis of a concave mirror M, with a velocity 6 m/s approaching the mirror of focal length 20 cm . The mirror itself is moving away from the pencil
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Sep
A pencil (PQ ) of length 20 cm is moving along the principal axis of a concave mirror M, with a velocity 6 m/s approaching the mirror of focal length 20 cm . The mirror itself is moving away from the pencil A pencil (PQ ) of length 20 cm is moving along the principal [...]
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