A metallic sphere cools from $50{}^{\rm{o}}{\rm{C}}\,{\rm{to}}\,\,\,{\rm{4}}{{\rm{0}}^{\rm{o}}}{\rm{C}}\,\,\,{\rm{in\,\, 300}}\,{\rm{s}}{\rm{.}}$ If atmospheric temperature around is ${20^o}C,$ then the sphere’s temperature after the next 5 min will be close to

JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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A metallic sphere cools from

50{}^\mathrm{o}\mathrm{C}\,\mathrm{to}\,\,\,\mathrm{4}{\mathrm{0}^\mathrm{o}}\mathrm{C}\,\,\,\mathrm{in\,\, 300}\,\mathrm{s}\mathrm{.}

If atmospheric temperature around is

{20^o}C,

then the sphere’s temperature after the next 5 min will be close to

View answer and explanation

Correct option: D

33{}^\mathrm{o}\mathrm{C}

Option D (

33{}^\mathrm{o}\mathrm{C}

) is correct because it is calculated using Newton's Law of Cooling, considering the rate of cooling and the surrounding temperature.