A spherical iron ball 10 cm in radius is coated with a layer of ice of uniform thickness that melts at a rate of When the thickness of ice is 5 cm, then the rate at which the thickness of ice decreases, is
As we learnt in
Rate Measurement -
Rate of any of variable with respect to time is rate of measurement. Means according to small change in time how much other factors change is rate measurement:
- wherein
Where dR / dt means Rate of change of radius.
Option 1)
This option is correct
Option 2)
This option is incorrect
Option 3)
This option is incorrect
Option 4)
This option is incorrect
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