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4

A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used?

A. 1 : 5

B. 1 : 2.5

C. 1 : 25

D. 1 : √5

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Correct Answer :

A. 1 : 5


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