UPSC Prelims 2001·GS1·geography·climatology

Assertion (A): During the Neap Tides, the high tide is lower and the low tide is higher than usual. Reason (R): The Neap Tide, unlike the Spring Tide, occurs on the New Moon instead of on the Full Moon.

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  1. ABoth A and R are individually true, and R is the correct explanation of A
  2. BBoth A and R are individually true, but R is NOT a correct explanation of A
  3. CA is true, but R is falseCorrect
  4. DA is false, but R is true

Explanation

The correct answer is C because Assertion A is true while Reason R is false. Assertion A is true because during Neap Tides, the sun and the moon are at right angles to each other. Their gravitational forces partially cancel each other out, leading to a smaller tidal range. This results in high tides that are lower than average and low tides that are higher than average. Reason R is false because Neap Tides occur during the first and third quarter phases of the moon, when the sun and moon are at right angles to the earth. It is Spring Tides, not Neap Tides, that occur during both the New Moon and the Full Moon when the sun, moon, and earth are aligned in a straight line.
geography: Assertion (A): During the Neap Tides, the high tide is lower and the low tide is higher than usual. Reason (R): The Neap

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