Q8 of 64 Page 11

If the temperature of a uniform rod is slightly increased by Δt, its moment of inertia I about a perpendicular bisector increase by

Moment of inertia of a uniform rod is




when the temperature is increased by ∆t then increased length is



the moment of inertia is





there is only a slight change in length so a2 (∆T)2 value is very less, so we can ignore this term.



Hence, the increase in moment of inertia is



Hence, option C is the correct option.

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