1
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Unit of Stefan's constant is
A
watt m2 K4
B
watt m2/K4
C
watt/m2 K
D
watt/m2K4
2
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Consider two rods of same length and different specific heats (S1, S2), conductivities (K1, K2) and area of cross-sections (A1, A2) and both having temperatures T1 and T2 at their ends. If rate of loss of heat due to conduction is equal, then
A
K1A1 = K2A2
B
$${{{K_1}{A_1}} \over {{S_1}}} = {{{K_2}{A_2}} \over {{S_2}}}$$
C
K2A1 = K1A2
D
$${{{K_2}{A_1}} \over {{S_2}}} = {{{K_1}{A_2}} \over {{S_1}}}$$
3
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
Which of the following is best close to an ideal black body?
A
black lamp
B
cavity maintained at constant temperature
C
platinium black
D
a lump of charcoal heated to high temperature.
4
AIPMT 2002
MCQ (Single Correct Answer)
+4
-1
The Wien's displacement law express relation between
A
wavelength corresponding to maximum energy and temperature
B
radiation energy and wavelength
C
temperature and wavelength
D
colour of light and temperature.
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