Latent heat of ice is 80 calorie/gm. A man melts 60 g of ice... | PHYSICS - HEAT TRANSFER | SolveeIt | Solveeit

Today, August 19

Question

Latent heat of ice is 80 calorie/gm. A man melts 60 g of ice by chewing in 1 minute. His power is

A

4800 W

B

336 W

C

1.33 W

D

0.75 W

Answer

336 W

Explanation

Solution

Work done by man = Heat absorbed by ice = mL = 60 × 80 = 4800 calorie = 20160 J

∴ Power = $\frac{W}{t} =$ $\frac{20160}{60}$ = 336W