Question

3.
A drilling machine is used to drill a hole in a
10 kg metal block. Power of the drilling
machine is 1 KW and it is used for 5 minutes.
If 40% of the work done by the drilling
machine is converted into heat in the metal
block, the rise in its temperature is (specific
heat - 0.12 cal gm' °C- and J = 4.2 l/Cal)
1) 20°C
2) 25°C
3) 35℃ 4) 50℃​

Answer 1

Answer:

50℃

hope it helps

mark me as brainliest

follow me