Question:

A nautical mile is equal to

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Remember the concept (1 minute of latitude) and the standard value \(\mathbf{1852}\ \mathrm{m}\). If the exact number is missing, choose the closest.
Updated On: Aug 12, 2025
  • 1825 metres
  • 2000 metres
  • 1575 metres
  • 2050 metres
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The Correct Option is A

Solution and Explanation

Definition: A nautical mile is the length corresponding to {one minute of arc} along a meridian (i.e., one minute of latitude). Internationally it is fixed at \(\mathbf{1852}\) metres.
Why the key picks (a): The exact value \(1852\ \mathrm{m}\) does not appear among the choices. Option (a) \(1825\ \mathrm{m}\) is the nearest approximation and is therefore taken as correct by the paper’s key.
Eliminating others: (b) \(2000\ \mathrm{m}\) is a round kilometre-based guess and incorrect; (c) \(1575\ \mathrm{m}\) and (d) \(2050\ \mathrm{m}\) have no historical basis for the nautical mile.
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