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The earth takes 24 h to rotate once about its axis. How much time does the sun take to shift by 1º when viewed from the earth?
- a)1 min
- b)5 min
- c)4 min
- d)10 min
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The earth takes 24 h to rotate once about its axis. How much time does...
Time taken for 360degree shift = 24 h
Time taken for 1degree shift = 24/360 h = 4 min.
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The earth takes 24 h to rotate once about its axis. How much time does...
The time it takes for the sun to shift by 1 degree when viewed from the Earth can be calculated by considering the Earth's rotation period and the angle covered by the sun in that time.
1. Earth's rotation period:
The Earth takes 24 hours to complete one full rotation about its axis. This means that in 24 hours, the Earth completes a full 360-degree rotation.
2. Angle covered by the sun in 24 hours:
Since the Earth completes a full rotation in 24 hours, the sun appears to move 360 degrees in the sky during this time.
3. Calculation:
To find the time it takes for the sun to shift by 1 degree, we can divide the angle covered by the sun in 24 hours (360 degrees) by 360. This will give us the angle covered by the sun in 1 hour.
360 degrees / 360 = 1 degree/hour
Since there are 60 minutes in an hour, we can further divide the angle covered by the sun in 1 hour by 60 to find the angle covered in 1 minute.
1 degree/hour / 60 = 1/60 degree/minute
Therefore, the sun takes 1/60 degree to shift by 1 minute when viewed from the Earth.
4. Answer:
Since the question asks for the time it takes for the sun to shift by 1 degree, the correct answer is option C) 4 minutes.
1. Earth's rotation period:
The Earth takes 24 hours to complete one full rotation about its axis. This means that in 24 hours, the Earth completes a full 360-degree rotation.
2. Angle covered by the sun in 24 hours:
Since the Earth completes a full rotation in 24 hours, the sun appears to move 360 degrees in the sky during this time.
3. Calculation:
To find the time it takes for the sun to shift by 1 degree, we can divide the angle covered by the sun in 24 hours (360 degrees) by 360. This will give us the angle covered by the sun in 1 hour.
360 degrees / 360 = 1 degree/hour
Since there are 60 minutes in an hour, we can further divide the angle covered by the sun in 1 hour by 60 to find the angle covered in 1 minute.
1 degree/hour / 60 = 1/60 degree/minute
Therefore, the sun takes 1/60 degree to shift by 1 minute when viewed from the Earth.
4. Answer:
Since the question asks for the time it takes for the sun to shift by 1 degree, the correct answer is option C) 4 minutes.
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