A sphere of ice at 0^(@)C having initial radius R is placed in an environment having ambient temperature gt0^(@)C. The ice melts uniformly, such that shape remains spherical. After a time .t. the radius of the sphere has reduced to r. Assuming the rate of heat absorpiton is proportional to the surface area of the sphere at any moment, which graph best depicts r (t).

A sphere of ice at 0^(@)C having initial radius R is placed in an envi

1.	A sphere of ice at 0^(@)C having initial radius R is placed in an environment having ambient temperature gt0^(@)C. The ice melts uniformly, such that shape remains spherical. After a time .t. the radius of the sphere has reduced to r. Assuming the rate of heat absorpiton is proportional to the surface area of the sphere at any moment, which graph best depicts r (t).
Answer» ANSWER :B