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A certain amount of ice is supplied heat...

A certain amount of ice is supplied heat at a constant rate for 7 min. For the first one minute the temperature rises uniformly with time. Then it remains constant for the next 4 min and again the temperature rises at uniform rate for the last 2 min. Given `S_("ice")=0.5cal//g^(@)C,L_(f)=80cal//g`.
Final temperature at the end of 7 min is

A

`10^(@)C`

B

`20^(@)C`

C

`30^(@)C`

D

`40^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
D
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