A gear system has the driving wheel of radius $2 c m$ and driven wheel of radius $20 c m$ . What is the gear ratio ?

1 : 2

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11 : 10

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1 : 1

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1 : 10

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Solution

The correct option is C $1 : 10$
$G e a r R a t i o = \frac{D r i v i n g W h e e l}{D r i v e n W h e e l}$
$\Rightarrow \frac{2}{20} = \frac{1}{10} = 1$ : $10$

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