A train 800 meters long is running at the speed of 78 km/h . If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is:
Q1. A train 800 meters long is running at the speed of 78 km/h . If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is:
Answer: 500 m
Explanation: Train speed = 78 km/h = 1300 m/min. In 1 minute, it covers 1300 m. Length of tunnel = 1300 − 800 = 500 m.