By keeping moment of inertia of a body constant, if we double the time period, then angular momentum of body

Remains constant

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Doubles

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Becomes half

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Quadruples

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Solution

The correct option is C Becomes half
when time period is doubled then angular momentum is halved
$L = I ω I i s c o n s t a n t . . . . . . g i v e n ∴ L a l s o b e c o m e h a l f i f a n g u l a r v e l o c i t y (ω) i s h a l f e d ∴ L b e c o m e s h a l f i f t i m e p e r i o d i s d o u b l e d$

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