Correct Answer - Option 2 : 590 m
Given:
Length of the train = 240 meter
Speed of the train = 60 km/h
Time = 50 sec
Concept:
Length of bridge = (Time × speed) ─ Length of train
Calculation:
Let, length of the bridge = x m
Speed in m/s = 60 × (5/18) = 16.6 m/s
According to the question,
⇒(240 + x)/16.6 = 50
⇒ 240 + x = 50 × 16.6
⇒ 240 + x = 830
⇒ x = 830 ─ 240
⇒ x = 590
∴ length of the bridge = x = 590 meter