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 ""^(-1)""^(@) C^(-1) and J = 4.2J//"Cal" )

A drilling machine is used to drill a hole in a 10 kg metal block. Pow

1.	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 ""^(-1)""^(@) C^(-1) and J = 4.2J//"Cal" )
Answer» `20^(@) C` `25^(@) C` `35^(@) C` `50^(@) C` Answer :B