A) 4.5 ms?1
B) 5. ms?1
C) 3.0 ms?1
D) 3.4 ms?1
Correct Answer: A
Solution :
Here optical distance between fish and the bird is \[s=y'+\mu y\] Differentiating w.r.t t we get \[\frac{ds}{dt}=\frac{dy'}{dt}+\frac{\mu dy}{dt}\] Þ \[9=3+\frac{4}{3}\frac{dy}{dt}\] Þ \[\frac{dy}{dt}=4.5\ m/\sec \]You need to login to perform this action.
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