Two solid spheres A and B made of the same material have radii r_(A) and r_(B) respectively . Both the spheres are cooled from the same temperature under the conditions valid for Newton's law of cooling . The ratio of the rate of change of temperature of A and B is

Two solid spheres A and B made of the same material have radii r_(A) a

1.	Two solid spheres A and B made of the same material have radii r_(A) and r_(B) respectively . Both the spheres are cooled from the same temperature under the conditions valid for Newton's law of cooling . The ratio of the rate of change of temperature of A and B is
Answer» `(r_A)/( r_B)` `(r_B)/( r_A)` `( r_A^2)/( r_B^2)` `(r_B^2)/( r_A^2)` ANSWER :B