Zeeshan has a faulty compass which shows North as South-West, East as North-West and so on. If Zeeshan wants to actually find the South-East direction on his compass, then he should check which direction on his compass so that he gets to determine the South-East direction correctly?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → West
A faulty compass of this kind is turned by the same angle in every direction. The mark North really points South-West, and the mark East really points North-West, so every mark points to the direction 135° anticlockwise from it. Applying this to all eight marks, the real South-East lies under the mark West:
Note: The answer given by NTA reads ‘shows North as South-West’ as ‘the direction marked North on the compass is really South-West’. One can argue the other way, that the real North appears on the compass as South-West. Then every real direction appears 135° anticlockwise from itself, the real South-East appears under the mark North, and the answer would be Option (4):
