UPSC Exam > UPSC Questions > Consider the following statements:1. Dawn is...
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Consider the following statements:
1. Dawn is the brief period between sunrise and full daylight.
2. Twilight is the period between sunset and complete darkness.
3. The duration of twilight is the same at the equator and the poles.
Which of the statements given above is/are correct?
- a)1 Only
- b)1 and 2 Only
- c)1 and 3 Only
- d)1, 2 and 3
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Consider the following statements:1. Dawn is the brief period between...
- Statement 1 is correct. Dawn is indeed the brief period between sunrise and full daylight. During dawn, the earth receives diffused or refracted light from the sun while it is still below the horizon.
- Statement 2 is correct. Twilight is the period between sunset and complete darkness. Similar to dawn, it is caused by the earth receiving diffused or refracted light from the sun when it is below the horizon.
- Statement 3 is incorrect. The duration of twilight is not the same at the equator and the poles. At the equator, the sun rises and sets in a vertical path, resulting in a shorter duration of refracted light. In contrast, at the poles, the sun rises and sets in an oblique path, resulting in a much longer period of twilight.
Therefore, the correct answer is Option B.
Most Upvoted Answer
Consider the following statements:1. Dawn is the brief period between...
Understanding Dawn and Twilight
Dawn and twilight are important concepts in understanding the transition between day and night. Let's analyze the statements provided.
Statement 1: Dawn is the brief period between sunrise and full daylight.
- This statement is correct.
- Dawn refers to the time when the sun begins to rise, transitioning from night to daylight.
- It encompasses the moments just before the sun appears above the horizon, marking the start of the day.
Statement 2: Twilight is the period between sunset and complete darkness.
- This statement is also correct.
- Twilight occurs after the sun has set but before the sky becomes completely dark.
- It is characterized by the scattering of sunlight in the atmosphere, providing ambient light even when the sun is below the horizon.
Statement 3: The duration of twilight is the same at the equator and the poles.
- This statement is incorrect.
- The duration of twilight varies significantly based on geographic location.
- At the equator, twilight lasts for a shorter duration due to the steep angle at which the sun sets and rises.
- Conversely, at the poles, twilight can last for hours or even days during certain times of the year due to the shallow angle of the sun's descent.
Conclusion
Based on the analysis:
- Statements 1 and 2 are correct.
- Statement 3 is incorrect.
Thus, the correct answer is option 'B': 1 and 2 only.
Dawn and twilight are important concepts in understanding the transition between day and night. Let's analyze the statements provided.
Statement 1: Dawn is the brief period between sunrise and full daylight.
- This statement is correct.
- Dawn refers to the time when the sun begins to rise, transitioning from night to daylight.
- It encompasses the moments just before the sun appears above the horizon, marking the start of the day.
Statement 2: Twilight is the period between sunset and complete darkness.
- This statement is also correct.
- Twilight occurs after the sun has set but before the sky becomes completely dark.
- It is characterized by the scattering of sunlight in the atmosphere, providing ambient light even when the sun is below the horizon.
Statement 3: The duration of twilight is the same at the equator and the poles.
- This statement is incorrect.
- The duration of twilight varies significantly based on geographic location.
- At the equator, twilight lasts for a shorter duration due to the steep angle at which the sun sets and rises.
- Conversely, at the poles, twilight can last for hours or even days during certain times of the year due to the shallow angle of the sun's descent.
Conclusion
Based on the analysis:
- Statements 1 and 2 are correct.
- Statement 3 is incorrect.
Thus, the correct answer is option 'B': 1 and 2 only.
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Solutions for Consider the following statements:1. Dawn is the brief period between sunrise and full daylight.2. Twilight is the period between sunset and complete darkness.3. The duration of twilight is the same at the equator and the poles.Which of the statements given above is/are correct?a)1 Onlyb)1 and 2 Onlyc)1 and 3 Onlyd)1, 2 and 3Correct answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for UPSC.
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