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11 Physics Kinetic Theory - Set No : 1 Question No :2

Question No : 2
               The rate of cooling at 600 K, if surrounding temperature is 300 K is. The rate of cooling at 900 K is     

                a)                    b)               

                c)          3           d)               

Answer No : 2
     (a)Rate of cooling proportional to  as per Stefan’s Law.=      

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