alleryএকজন নৌকারোহী স্রোতের অনুকূলে 2 ঘন্টায় 24 km যান এবং 3 ঘন্টায় ফিরে আসেন। স্রোতের গতিবেগ কত?
A1 km/h
B2.5 km/h
C2 km/h
D1.5 km/h
Answer & Solution
Correct answer: C. 2 km/h
গতিবেগ হলো 12 এবং 8 km/h, সুতরাং স্রোতের গতিবেগ হলো (12 - 8) / 2 = 2 km/h।
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