The emissive power of a body depends on
A.Nature of body
B.Temperature of body
C.Physical nature
D.All of the above
E.None of the above
A.Nature of body
B.Temperature of body
C.Physical nature
D.All of the above
E.None of the above
A.56.7 x 10-9
B.1.335 x 10-12
C.4.87 x 10-8
D.0.174 x 10-8
E.0.567 x 10-4
A. diffuses all the thermal rays in the different directions
B. absorbs all the thermal rays
C. negligible absorptivity but high reflectivity
D.Allows all the incident radiation to pass through it
Continue reading “The diathermous body is one that ______________?”
A.it has low density
B.it has high specific heat
C.it is a diatomic gas
D.its critical temperature is less than the room temperature
A.0.13
B.0.32
C.0.51
D.None of the above
A.2000?K
B.6000?K
C.20000?K
D.Millions of degrees
E.Infinitely large
A.Grey body
B.White body
C.Opaque body
D.Transparent body
E.Black body
A.0.001 kcal/m-hr-?C
B.0.05 kcal/m-hr-?C
C.0.5 kcal/m-hr-?C
D.1.0 kcal/m-hr-?C
E.1.5 kcal/m-hr-?C
A.Rubber
B.Lead
C.Aluminium
D.Iron
E.Mercury