Consider two hot bodies B_1 and B_2 which have temperatures 100^oC and 80^oC respectively at t=0. The temperature of the surroundings is 40^oC. The ratio of the respective rates of cooling R_1 and R_…

Question

Consider two hot bodies B_1 and B_2 which have temperatures 100^oC and 80^oC respectively at t=0. The temperature of the surroundings is 40^oC. The ratio of the respective rates of cooling R_1 and R_2 of these two bodies at t=0 will be

Accepted Answer

Correct answer: A. (a) Initially at t = 0 Rate of cooling (R) ∝ Fall in temperature of body (θ – θ_0) ⇒ R_1R_2= _1- _0 _2- _0= 100-4080-40= 32

$Consider two hot bodies B_{1} and B_{2} which have temperatures 10 0^{o} C and 8 0^{o} C respectively at t = 0 . The temperature of the surroundings is 4 0^{o} C . The ratio of the respective rates of cooling R_{1} and R_{2} of these two bodies at t = 0 will be$

Solution

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