Railways Exam > Railways Questions > A train 130 metres, running at a speed of 45 ...
Start Learning for Free
A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?
- a)200 m
- b)225 m
- c)245 m
- d)250 m
Correct answer is option 'C'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
A train 130 metres, running at a speed of 45 km/hr, crosses a bridge i...
Let the length of the bridge be = x metre Speed of the train = 45 km/hr
Distance = Speed × time
x = 375 – 130
= 245 metres
Most Upvoted Answer
A train 130 metres, running at a speed of 45 km/hr, crosses a bridge i...
To find the length of the bridge, we need to first calculate the actual speed of the train. Then we can use the formula:
Length of the bridge = Total distance covered - Length of the train
Let's break down the problem step by step:
1. Calculate the actual speed of the train:
- The given speed is 45 km/hr.
- We need to convert it to m/s as the time is given in seconds.
- 1 km/hr = 5/18 m/s (conversion factor)
- Therefore, the actual speed of the train is (45 * 5/18) m/s = 25/2 m/s = 12.5 m/s.
2. Calculate the total distance covered by the train:
- The train crosses the bridge in 30 seconds.
- We know the speed of the train, so we can use the formula: Distance = Speed × Time.
- Distance = (12.5 m/s) × (30 s) = 375 m.
3. Calculate the length of the train:
- The length of the train is given as 130 m.
4. Calculate the length of the bridge:
- Using the formula Length of the bridge = Total distance covered - Length of the train.
- Length of the bridge = 375 m - 130 m = 245 m.
Therefore, the length of the bridge is 245 m. Hence, option (c) is the correct answer.
Length of the bridge = Total distance covered - Length of the train
Let's break down the problem step by step:
1. Calculate the actual speed of the train:
- The given speed is 45 km/hr.
- We need to convert it to m/s as the time is given in seconds.
- 1 km/hr = 5/18 m/s (conversion factor)
- Therefore, the actual speed of the train is (45 * 5/18) m/s = 25/2 m/s = 12.5 m/s.
2. Calculate the total distance covered by the train:
- The train crosses the bridge in 30 seconds.
- We know the speed of the train, so we can use the formula: Distance = Speed × Time.
- Distance = (12.5 m/s) × (30 s) = 375 m.
3. Calculate the length of the train:
- The length of the train is given as 130 m.
4. Calculate the length of the bridge:
- Using the formula Length of the bridge = Total distance covered - Length of the train.
- Length of the bridge = 375 m - 130 m = 245 m.
Therefore, the length of the bridge is 245 m. Hence, option (c) is the correct answer.
Attention Railways Students!
To make sure you are not studying endlessly, EduRev has designed Railways study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Railways.
|
Explore Courses for Railways exam
|
|
Similar Railways Doubts
Top Courses for RailwaysView all
A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer?
Question Description
A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer?.
A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer?.
Solutions for A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Railways.
Download more important topics, notes, lectures and mock test series for Railways Exam by signing up for free.
Here you can find the meaning of A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A train 130 metres, running at a speed of 45 km/hr, crosses a bridge in 30 seconds. What is the length of the bridge ?a)200 mb)225 mc)245 md)250 mCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Railways tests.
|
|
Explore Courses for Railways exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup