1.

A plane mirror is approaching you 10m/s at what speed will the image approach you

Answer»

If X is the distance between the OBJECT and the mirror, 2X is the distance between the object and its image because for a plane mirror object distance is equal to the image distance. So if the plane mirror is approaching the object with a speed of x/t, then the image will approach the object with a speed of 2x/t. So if x/t = 10 cm/s, 2x/t = 20 cm/s. HENCE the image will approach you with a speed of 20 cm/s.



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