A steel drill is making 180 revolutions per minute, under a constant torque of 5 N-m. If it drills a hole in 7 s. in a steel block of mass 600 gm, rise in temperature of the block is ( s= 0.1 "cal/gm"//""^(@) C)

A steel drill is making 180 revolutions per minute, under a constant t

1.	A steel drill is making 180 revolutions per minute, under a constant torque of 5 N-m. If it drills a hole in 7 s. in a steel block of mass 600 gm, rise in temperature of the block is ( s= 0.1 "cal/gm"//""^(@) C)
Answer» `2.6^(@) C` `1.3^(@) C` `5.2^(@) C` `3^(@)C` ANSWER :A