395. 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 ?

by
A. 1 : 5
B. 1 : 2.5
C. 1 :25
D. 1:V5″
✅ The correct answer is option A.

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