I have asked you a question :- A particle is moving towards a concave mirror of focal length 30 cm along it's axis with a constant velocity of 4 cm/s . Find the velocity of image when object is at 90 cm from a mirror. Your answer is given below . I didn't understood what you have done in 3rd step after mirror formula.

Asked by Shreyash Taori | 30th Nov, 2013, 05:44: AM

Expert Answer:

Answered by Faiza Lambe | 2nd Dec, 2013, 12:34: PM

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