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Question

On open ground, a motorist follows a track that turns to his left by an angle of 60 after every 500m. Starting from a given turn, the displacement of the motorist at the third turn is:

A
500m
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B
500 3 m
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C
1000m
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D
1000 3 m
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Solution

The correct option is C 1000m
The path followed by the motorist is a regular hexagon ABCDEF of side length 500m as shown in the figure. Let the motorist starts from A and takes the third turn at D.
Therefore, the magnitude of this displacement is
AD=AG+GD

=500m+500m

=1000m

1077846_938667_ans_9a78e3257cc34aaea22e9d86afbdb586.png

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