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Difference in...

Question

Difference in length of an arc and its subtended chord on earth's surface for a distance of 18.2 km is -

A

10 mm

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B

15 mm

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C

22 mm

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D

100 mm

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Solution

The correct option is A 10 mm
Arc AC will be projected as chord A'C' represented by dotted line. If Arc AB = 18.5 km then chord A'B' will be 1.52 cm shorter than Arc AB

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