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A wheel which is initially at rest is su...

A wheel which is initially at rest is subjected to a constant angular acceleration about its axis. It rotates through an angle of `15^(0)` in time t secs. The increase in angle through which it rotates in the next 20 secs is

A

`90^(0)`

B

`120^(0)`

C

`30^(0)`

D

`45^(0)`

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The correct Answer is:
B
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