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Consider the following statements:
1. During equinoxes, all parts of the world have equal days and nights.
2. Equinoxes occur during the months of June and December every year.
Which of the statements given above is/are correct?
- a)1 only
- b)2 only
- c)Both 1 and 2
- d)Neither 1 nor 2
Correct answer is option 'A'. Can you explain this answer?
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Most Upvoted Answer
Consider the following statements:1. During equinoxes, all parts of th...
- In the course of a year, the earth’s revolution round the sun with its axis inclined at 66 1/2 degrees to the plane of the ecliptic changes the apparent altitude of the midday sun. The sun is vertically overhead at the equator on two days each year. These are usually 21 March and 21 September though the date changes because a year is not exactly 365 days. Hence statement 2 is not correct.
- These days are termed equinoxes meanings equal nights because, on these two days, all parts of the world have equal days and nights. Hence statement 1 is correct.
- After the March equinox the sun appears to move north and is vertically overhead at the Tropic of Cancer (23 1/2 degrees N.) on about 21 June. This is known as the June or summer solstice, when the northern hemisphere will have its longest day and shortest night. Hence statement 2 is not correct.
- By about 22 December, the sun will be overhead at the Tropic of Capricorn (23 1/2 degrees S.). This is the winter solstice when the southern hemisphere will have its longest day and shortest night. Hence statement 3 is correct.
- The Tropics thus mark the limits of the overhead sun, for beyond these, the sun is never overhead at any time of the year. Such regions are marked by distinct seasonal changes spring, summer, autumn and winter. Beyond the Arctic Circle (66 1/2 degrees N.) and the Antarctic Circle (66 1/2 degrees S.) where darkness lasts for 6 months and daylight is continuous for the remaining half of the year, it is always cold; for even during the short summer the sun is never high in the sky.
- Within the tropics, as the midday sun varies very little from its vertical position at noon daily, the four seasons are almost indistinguishable. Days and nights are almost equal all year round.
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Consider the following statements:1. During equinoxes, all parts of th...
Equinoxes Explained:
An equinox is a time when the sun crosses the celestial equator, resulting in equal day and night lengths. There are two equinoxes in a year - the Vernal Equinox in March and the Autumnal Equinox in September.
Statement Analysis:
1. During equinoxes, all parts of the world have equal days and nights: This statement is correct. During the equinoxes, the tilt of the Earth is such that the sun is directly above the equator, leading to equal lengths of day and night across the entire planet.
2. Equinoxes occur during the months of June and December every year: This statement is incorrect. Equinoxes actually occur in March and September, not in June and December. The June and December solstices mark the longest and shortest days of the year, respectively.
Therefore, the correct answer is option 'A' (1 only), as statement 1 is accurate while statement 2 is not. It is essential to have a clear understanding of astronomical events like equinoxes to avoid confusion about their timing and effects on day and night lengths.
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Consider the following statements:1. During equinoxes, all parts of the world have equal days and nights.2. Equinoxes occur during the months of June and December every year.Which of the statements given above is/are correct?a)1 onlyb)2 onlyc)Both 1 and 2d)Neither 1 nor 2Correct answer is option 'A'. Can you explain this answer?
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