A convex, rearview mirror of focal length 20 cm, is fitted in a car. A second car 2 m broad and 1.6 m high is 6 m away from the first car and overtakes the first car at a relative speed of 15 m s -1 , then the speed of the image of the second car with respect to the first car is
Text Solution
Verified by ExpertsThe correct answer is:
A
0.016ms -1
Mirror formula 
Differentiating w.r.t. t,
But 
Now 
and 
Speed ofimage 
= 0.016 m/s
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