allery54 km/h की चाल से चल रही 180 m लंबी एक ट्रेन उसी दिशा में 18 km/h की चाल से दौड़ रहे एक जॉगर को ओवरटेक करती है। जॉगर को पार करने में कितना समय लगेगा?
A15 सेकंड
B18 सेकंड
C12 सेकंड
D20 सेकंड
Answer & Solution
Correct answer: B. 18 सेकंड
सापेक्ष चाल = 54 - 18 = 36 km/h = 10 m/s, और समय = 180 / 10 = 18 सेकंड।
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