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A solid sphere of radius r and temperature T placed in environment of temperature T .if specifus heat is s then rate of cooling is proportional to a) r b) 1/r c)1/r*2 d)r*2

A solid sphere of radius r and temperature T placed in environment of temperature T .if specifus heat is s then rate of cooling is proportional to 
 
a) r
b) 1/r
c)1/r*2
d)r*2
 

Grade:12th pass

1 Answers

Arun
25763 Points
2 years ago
Rate of cooling is directly proportional to surface area.
Hence 
Rate lf cooling is proportional to r²
Option D is correct

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