A train of length 110 m is moving at a uniform speed of 132 \text{ km/hr}. The time required to cross a bridge of length 165 m is
- A. 6.5 seconds
- B. 7 seconds
- C. 7.5 seconds ✓
- D. 8.5 seconds
Correct Answer: C. 7.5 seconds
Explanation
Total distance = 110 + 165 = 275 \text{ m}. Speed = 132 \text{ km/hr} = 132 \times \frac{5}{18} = \frac{110}{3} \text{ m/s}. Time = \frac{\text{Distance}}{\text{Speed}} = \frac{275}{\frac{110}{3}} = \frac{825}{110} = 7.5 \text{ seconds}.
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