allery120 m લાંબી એક ટ્રેન 12 સેકન્ડમાં એક ટેલિગ્રાફ પોલ પસાર કરે છે. તેની ઝડપ કેટલી છે?
A32 km/h
B30 km/h
C40 km/h
D36 km/h
Answer & Solution
Correct answer: D. 36 km/h
તે પોતાની લંબાઈ જેટલું અંતર 12 s માં કાપે છે, તેથી 120 / 12 = 10 m/s, જે 36 km/h થાય છે.
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