A circular metallic ring of radius R has a small gap of width d. The coefficient of thermal expansion of the metal is `alpha` in appropriate units. If we increase the temperature of the ring by a amount `DeltaT`, then width of the gap – (A) Will increases by an amount `dalphaDeltaT`A. Will increases by an amount `d alphaDeltaT`B. will not changeC. Will increases by an amjoint `(2pi R -d) alphaDeltaT`D. Will decreases by an amount `dalphaDeltaT`

A circular metallic ring of radius R has a small gap of width d. The c

1.	A circular metallic ring of radius R has a small gap of width d. The coefficient of thermal expansion of the metal is `alpha` in appropriate units. If we increase the temperature of the ring by a amount `DeltaT`, then width of the gap – (A) Will increases by an amount `dalphaDeltaT`A. Will increases by an amount `d alphaDeltaT`B. will not changeC. Will increases by an amjoint `(2pi R -d) alphaDeltaT`D. Will decreases by an amount `dalphaDeltaT`
Answer» Correct Answer - A

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