Answer: (3) volume
Explanation
Change in radius =rΔr=X
Change in area =Δ(4πr2/(4πr2)
=Δr2/r2
= 2Δr/r
=2X
Change in Volume =Δ(4/3πr3/(4/3πr3)
=Δr3/r3
= 3Δr/r
= 3X
Thus change in volume is maximum.
when a copper sphere is heated, maximum percentage change will be observed in (1) radius (2) area (3) volume (4) none of these
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