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Events of the War

A wire is wou...

Question

A wire is wound over a pencil and placed over a scale as shown in the figure. If the number of turns wound around the pencil are 20, the radius of the given wire is ________ .

A

2.5 mm

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B

1.25 mm

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C

1.5 mm

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D

0.75 mm

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Solution

The correct option is D 0.75 mm

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