# Suppose while sitting in a parked car,you notice a jogger approaching towards you in the rear view mirror of R=2 m.if the jogger running in a speed of 5 m/s,how fast is the image of the jogger moving,when the jogger is (a) 39 m (b) 29 m (c) 19 m and (d) 9 m away? answer are 1/280,1/150,1/60,1/10

1
tenth ka level ka base par ans. dana

did u learn differentiation or not..? if we do not use differentiation, then you find, v at each point and v after one second of time.. the difference will give an approximate or crude value.

i had only learn the fomulaes 1/f=1/u+1/v

r2f

m=hi/h0=-v/u

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