A 725 m long train passes through a 235
A 725 m long train passes through a 235 m long tunnel in 48 sec. Find the speed of the train.
725 मीटर लंबी एक रेलगाड़ी को 235 मीटर लंबी एक सुरंग को पार करने में 48 सेकंड लगते है।रेलगाड़ी की चाल ज्ञात कीजिए।
Detailed Solution & Logic
Correct Answer:
72 km/h
L1 = 725m, L2 = 235 m, t = 48, s
Total distance = L1 + L2 = 960,m
v = $ \dfrac{960}{48} = 20 $ m/s
v = 20 $ \times \dfrac{18}{5} = 72, $ km/h
Answer = 72,km/h
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