1.

A car is fittedwith a convex side view mirror of focal length 20cm. A second car 2.8cm behind the first car is overtaking the first car at relative speed of 15m//s. The speed of the image of the second car as seen in the mirror of the first one is

Answer»

`1/15 m//s`
`10m//s`
`15m//s`
`1/10m//s`

ANSWER :A


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