Heat TransferHard
Question
The rectangular surface of area 8cm × 4 cm of a black body at a temperature of 127oC emits energy at the rate of E per second. If the length and breadth of the surface are each reduced to half of the initial value and the temperature is raised to 327oC, the rate of emission of energy will become.
Options
A.
E
EB.
E
EC.
E
ED.
E
EMore Heat Transfer Questions
Three rods of copper, brass and steel are welded together to form a Y-shaped structure. Area of crossseciton of each rod...If a carved black utensil is heated to high temperature and then brought in dark then :...In which process, the rate of transfer of heat is maximum : -...A Cylinder of radius R made of material of thermal conductivity K1 is surrounded by a cylindrical shell of inner radius ...Two identical square rods of metal are welded end to end as shown in figure (a) 20 calories of heat flows through it in ...