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DIRECTIONS: Choose the most appropriate answer:
Q. A train covers a distance of 12 km in 10 min. If it takes 6 sec to pass a telegraph post, the length of the train is
- a)90 m
- b)100 m
- c)120 m
- d)140 m
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
DIRECTIONS: Choose the most appropriate answer:Q. A train covers a dis...
Let length of the train is x. Distance = 12 km = 12000 m
Time = 10 min = 10 × 60 = 600 sec
Speed of train = 12000/600 = 20 m / sec
when train passes a telegraph post it covers distance equal to its length.
using distance = time × speed x = 6 × 20 = 120 m
Time = 10 min = 10 × 60 = 600 sec
Speed of train = 12000/600 = 20 m / sec
when train passes a telegraph post it covers distance equal to its length.
using distance = time × speed x = 6 × 20 = 120 m
Most Upvoted Answer
DIRECTIONS: Choose the most appropriate answer:Q. A train covers a dis...
Understanding the Problem
To find the length of the train, we need to analyze the information provided:
- The train covers a distance of 12 km in 10 minutes.
- It takes 6 seconds to pass a telegraph post.
Calculating Speed of the Train
1. **Convert Distance to Meters**:
- 12 km = 12,000 meters
2. **Convert Time to Seconds**:
- 10 minutes = 10 × 60 = 600 seconds
3. **Determine Speed**:
- Speed = Distance / Time
- Speed = 12,000 m / 600 s = 20 m/s
Passing the Telegraph Post
When the train passes a telegraph post, it travels its own length in the time it takes to pass the post.
1. **Time to Pass the Post**:
- Given: 6 seconds
2. **Calculate Length of the Train**:
- Length = Speed × Time
- Length = 20 m/s × 6 s = 120 meters
Conclusion
The length of the train is 120 meters, which corresponds to option 'C'. This calculation confirms that the train covers its own length in the duration it takes to pass the telegraph post.
To find the length of the train, we need to analyze the information provided:
- The train covers a distance of 12 km in 10 minutes.
- It takes 6 seconds to pass a telegraph post.
Calculating Speed of the Train
1. **Convert Distance to Meters**:
- 12 km = 12,000 meters
2. **Convert Time to Seconds**:
- 10 minutes = 10 × 60 = 600 seconds
3. **Determine Speed**:
- Speed = Distance / Time
- Speed = 12,000 m / 600 s = 20 m/s
Passing the Telegraph Post
When the train passes a telegraph post, it travels its own length in the time it takes to pass the post.
1. **Time to Pass the Post**:
- Given: 6 seconds
2. **Calculate Length of the Train**:
- Length = Speed × Time
- Length = 20 m/s × 6 s = 120 meters
Conclusion
The length of the train is 120 meters, which corresponds to option 'C'. This calculation confirms that the train covers its own length in the duration it takes to pass the telegraph post.
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DIRECTIONS: Choose the most appropriate answer:Q. A train covers a distance of 12 km in 10 min. If it takes 6 sec to pass a telegraph post, the length of the train isa)90 mb)100 mc)120 md)140 mCorrect answer is option 'C'. Can you explain this answer?
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