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Question

A person travels 100 km in the North direction and then turns right and travels 100 km. The magnitude of displacement is

A
200 km
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B
1002 km
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C
1003 km
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D
None of these
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Solution

The correct option is B 1002 km

Assuming O to be the initial position. Man travels 100 km north (OA), turns right and travel 100 km (AB)
Displacement = OB (Line joining initial and final position)
By Pythagaros theorem,
Magnitude of displacement, =(OA)2+(AB)2
=1002+1002=1002 km

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