Heat TransferMedium
Question
Which of the following statements is/are true ?
Options
A.Hole in the wall of a cavity radiator behaves like a black body
B.Hole in the wall of a cavity radiator does not act like a black body
C.When a body is kept in a surrounding of low temperature it does not absorb any energy from the surroundings
D.When a body is kept in surrounding of low temperature it simultaneously radiates heat to the surroundings and absorbs heat from the surroundings
More Heat Transfer Questions
Two metallic spheres S1 and S2 are made of the same material and have got identical surface finish. The mass of S1 is th...A perfectly black body is one where :...Increasing the temperature of a black body wavelength for maximum emission....f a liquid is heated in weightlessness, the heat is transmitted through...A spherical black body with a radius of 12 cm radiates 450 watt power at 500 K. If the radius were halved and the temper...