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JEE Advanced 2015 Paper 1
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© examsnet.com
Question : 6
Total: 60
Two spherical stars A and B emit blackbody radiation.The radius of A is 400 times that of B and A emits
10
4
time the power from B.The ratio
(
λ
A
λ
B
)
of their wavelengths
λ
A
and
λ
B
at which the peaks oocur in their respective radiation curve is
Your Answer:
Validate
Solution:
(
d
Q
d
t
)
A
=
10
4
(
d
Q
d
t
)
(
400
R
)
2
T
A
4
=
10
4
(
R
2
T
B
4
)
So,
2
T
A
=
T
B
and
λ
A
λ
B
=
T
B
T
A
=
2
© examsnet.com
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