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Question : The time in which a train 1800 m long, travelling at the speed of 30 km/hr, will pass a signal pole is:

Option 1: 200 seconds

Option 2: 250 seconds

Option 3: 220 seconds

Option 4: 216 seconds


Team Careers360 25th Jan, 2024
Answer (1)
Team Careers360 27th Jan, 2024

Correct Answer: 216 seconds


Solution : Given: A train 1800 m long, travelling at the speed of 30 km/hr.
Convert km/hr into m/s by multiplying it with $\frac{5}{18}$.
⇒ 30 km/hr = 30 × $\frac{5}{18}$ = $\frac{25}{3}$ m/s
Now, $\text{Time}=\frac{\text{Distance}}{\text{Speed}}$
So, the time in which a train passes a signal pole $=\frac{1800}{\frac{25}{3}}=\frac{1800\times 3}{25}=216$ seconds
Hence, the correct answer is 216 seconds.

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