alleryট্রেন 180 m এবং 220 m লম্বা 54 এবং 36 km/h এ বিপরীত দিকে চলে। পুরোপুরি পার করার সময়?
A12 s
B20 s
C16 s
D25 s
Answer & Solution
Correct answer: C. 16 s
তারা কভার করে 400 m আপেক্ষিক গতিতে 90 km/h = 25 m/s, প্রয়োজন 16 সেকেন্ড।
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