Question

Ques-7 A 50 m long train passes over a bridge at a speed of 30km/h. if it takes 36 seconds to
cross the bridge, the length of the bridge is:
(a) 100m (b) 200m (c) 250m (d) 300​

Answer 1

Answer:

(c) 250m

Explanation:

Velocity v=30 km/h=30× 5/18 = 8.3 m/s

Time taken to cross t=36 s

Let the length of bridge be L.

Distance covered by train to cross d=50+L

So, L+50=36×8.3

⟹ L≈250 m

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