alleryप्रवाहाच्या दिशेने वेग 18 km/h आणि प्रवाहाच्या विरुद्ध दिशेने वेग 10 km/h असल्यास, नदीचा प्रवाह किती वेगाने वाहतो?
A2 km/h
B8 km/h
C14 km/h
D4 km/h
Answer & Solution
Correct answer: D. 4 km/h
प्रवाहाचा वेग हा फरकाच्या निम्मा असतो, (18 - 10) / 2 = 4 km/h.
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