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11.Thermodynamics
normal

ગરમ પાણીથી ભરેલ ડોલનું પાણી $75°C$ થી $70°C$ સુધી ઠંડુ $T_1$ સમયમાં, $70°C$ થી $65°C$. $T_2$ સમયમાં અને $65°C$ થી $60°C$ $T_3$ સમયમાં થાય ત્યારે..

A

$T_1 = T_2 = T_3$

B

$T_1 > T_2 > T_3$

C

$T_1 < T_2 < T_3$

D

$T_1 > T_2 > T_3$

Solution

Smaller the temperature difference between the body and the surroundings, smaller is the rate of cooling and more is the time taken to cool. Or, in other words, hotter the body, faster it cools.

Therefore, $t _1 < t _2 < t _3$

Standard 11
Physics

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