Assertion (A) > : The Equator is a great circle. Reason (R) > : The Equator encircles the whole Earth and its plane divides the Earth into two equal halves.

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Q: 25 (NDA-I/2009)

Assertion (A) : The Equator is a great circle.
Reason (R) : The Equator encircles the whole Earth and its plane divides the Earth into two equal halves.

question_subject: 

Geography

question_exam: 

NDA-I

stats: 

0,38,8,38,6,1,1

keywords: 

{'equator': [10, 0, 6, 7], 'great circle': [0, 0, 2, 0], 'earth': [0, 1, 1, 1], 'whole earth': [0, 0, 1, 0], 'equal halves': [0, 0, 1, 0], 'plane': [0, 0, 4, 8]}

The correct option is option 1: Both A and R are individually true and R is the correct explanation of A.

Explanation:

The Equator is a great circle. A great circle is a circle on a sphere whose center is the same as the center of the sphere. In other words, a great circle divides the sphere into two equal halves. Since the Equator encircles the whole Earth and its plane divides the Earth into two equal halves, it meets the criteria of being a great circle.

So, Assertion (A) that states "The Equator is a great circle" is true.

Reason (R) states that "The Equator encircles the whole Earth and its plane divides the Earth into two equal halves." This reason is correct and provides a logical explanation for A. The fact that the Equator divides the Earth into two equal halves supports the statement that it is a great circle.

Hence, both Assertion (A) and Reason (R) are individually true, and Reason (R) is the correct explanation for Assertion (A).