Multiple choice

A train ,110 m long is running at a speed of 60 km./hr. How many seconds does it take to cross another train,170 m long, standing on parallel track ? एक 110 मी. लंबी रेलगाड़ी 60 किमी./घं.की चाल से चल रही है। एक समान्तर रेल पटरी पर खड़ी हुई किसी 170 मी. लंबी रेलगाड़ी को पार करने में यह कितने से. लेगी?

  1. 15.6

  2. 16.8

  3. 17.2

  4. 18
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The second train is stationary, so only the first train's speed matters. Total distance to cover = 110 + 170 = 280 m. Speed = 60 km/hr = 60 × 5/18 = 50/3 m/s. Time = 280/(50/3) = 280 × 3/50 = 16.8 seconds.

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