allery54 km/h ની ઝડપે જતી એ જ 180 m લાંબી ટ્રેન તેની સામેની દિશામાં 18 km/h ની ઝડપે દોડતા જોગરને મળે છે. તેને પાર કરવાનો સમય કેટલો?
A12 સેકન્ડ
B10 સેકન્ડ
C8 સેકન્ડ
D9 સેકન્ડ
Answer & Solution
Correct answer: D. 9 સેકન્ડ
સાપેક્ષ ઝડપ 72 km/h = 20 m/s, તેથી 180 / 20 = 9 સેકન્ડ.
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