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[" A car is fitted with a convex side vi...

[" A car is fitted with a convex side view mirror "],[" of focal length "20cm" .Asecond car "2.8m" behind "],[" the first car is overtaking the first tar 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 : "],[" 1) "(1)/(15)m/s" 2) "10m/squad 3" ) "15m/s4" ) "(1)/(10)m/s]

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