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Question: The rate of cooling at 600 K, if surrounding temperature is 300 K is R. the rate of cooling at 900 K...

The rate of cooling at 600 K, if surrounding temperature is 300 K is R. the rate of cooling at 900 K is

A

163\frac { 16 } { 3 } R

B

2 R

C

3 R

D

23\frac { 2 } { 3 }R

Answer

163\frac { 16 } { 3 } R

Explanation

Solution

R2R1=T24−T04 T14−T04\frac { \mathrm { R } _ { 2 } } { \mathrm { R } _ { 1 } } = \frac { \mathrm { T } _ { 2 } ^ { 4 } - \mathrm { T } _ { 0 } ^ { 4 } } { \mathrm {~T} _ { 1 } ^ { 4 } - \mathrm { T } _ { 0 } ^ { 4 } }