Kirchoff‟s law applies to _____________ radiation?
Kirchoff‟s law applies to _____________ radiation?
A. Total
B. Monochromatic
C. Both A. & B.
D. Neither A. nor B.
A. Total
B. Monochromatic
C. Both A. & B.
D. Neither A. nor B.
A. Parabolic
B. Hyperbolic
C. Linear
D. Logarithmic
A. Equal to
B. More than
C. Less than
D. Either more or less than (depending upon the fluid)
A. Painting the surface black
B. Painting the surface white (with aluminium paint)
C. Giving the surface a mirror finish
D. Roughening the surface
A. t4
B. T4
C. 1/t4
D. 1/T4
A. Plain carbon steel
B. Stainless steel
C. Lead
D. Copper
A. Reynolds number
B. Prandtl number
C. Grashoff number
D. None of these