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Question

If fish are flowing at a rate of 10 fish/m2s, and the 10 m2 net is dipped at an angle of 600 in their path for 1 second, how many fish do we catch?



Your Answer
A

50 √3

Correct Answer
B

50

Your Answer
C

60

Your Answer
D

100


Solution

The correct option is B

50


In this case, the area vector makes an angle 90- 60=30 with the fish flow vector.

So, number of fishes = 10 x 10 x sin30 = 50.

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