How many right angles make two full rotations?

4

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6

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8

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None of these

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Solution

The correct option is B $8$
Angle covered in one full rotation $= 360^{\circ}$
Angle covered in two full rotaions $= 2 \times 360^{\circ} = 720^{\circ}$
One right angle $= 90^{\circ}$
So total right angles $= \frac{720^{\circ}}{90^{\circ}} = 8$
So option $C$ is correct.

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