A cargo train 120 meters long crosses a warehouse tunnel in 24 seconds. If the train speed is 60 km/h, find the absolute length of the tunnel. MCQ with Answer and Explanation

Question

A cargo train 120 meters long crosses a warehouse tunnel in 24 seconds. If the train speed is 60 km/h, find the absolute length of the tunnel.

A. 250 meters

B. 320 meters

C. 280 meters

D. 300 meters

Answer: Option C

Solution (By JKSSB Mock Tests)

Speed of train = 60 * (5/18) = 50/3 m/s. Total distance handled in 24 seconds = (50/3) * 24 = 400 meters. Length of tunnel = 400 - 120 = 280 meters.

This question belongs to: Maths Time Speed and Distance

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Question #1

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A car maps a course distance of 240 km at an average speed of 60 km/h and handles the return trip at 40 km/h. Find the combined average speed.

A. 46 km/h

B. 48 km/h

C. 52 km/h

D. 50 km/h

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Correct Answer: Option B

Explanation:
Average Speed = 2xy / (x + y) = (2 * 60 * 40) / (60 + 40) = 4800 / 100 = 48 km/h.

This question belongs to: Maths Time Speed and Distance

Question #2

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A sound wave travels at 340 m/s. How much distance in kilometers does it cover in exactly 15 seconds?

A. 4.8 km

B. 5.1 km

C. 5.4 km

D. 5.7 km

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Correct Answer: Option B

Explanation:
Distance = Speed * Time = 340 * 15 = 5100 meters. Converting to kilometers = 5100 / 1000 = 5.1 km.

This question belongs to: Maths Time Speed and Distance

Question #3

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A train running at 75 km/h overtakes a motor cyclist riding at 15 km/h in the same direction in 15 seconds. Find the absolute length of the train.

A. 270 meters

B. 250 meters

C. 300 meters

D. 220 meters

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Correct Answer: Option B

Explanation:
Relative speed = 75 - 15 = 60 km/h = 60 * (5/18) = 50/3 m/s. Length of train = Relative speed * Time = (50/3) * 15 = 250 meters.

This question belongs to: Maths Time Speed and Distance

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