alleryशांत जल में एक नाव की चाल 12 km/h है और धारा की चाल 3 km/h है। धारा के अनुकूल (downstream) इसकी चाल क्या है?
A9 km/h
B15 km/h
C18 km/h
D12 km/h
Answer & Solution
Correct answer: B. 15 km/h
धारा के अनुकूल दिशा में धारा की चाल जुड़ जाती है, 12 + 3 = 15 km/h।
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