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Class 11 NEET Physics Properties of Matter Questions
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© examsnet.com
Question : 69
Total: 89
A black body at
1227
°
C
emits radiations with maximum intensity at a wavelength of
5000
Å
. If the temperature of the body is increased by
1000
°
C
,
the maximum intensity will be observed at
(2006)
3000
Å
4000
Å
5000
Å
6000
Å
Validate
Solution:
According to Wein's displacement law,
λ
max
T
=
constant
∴
λ
max
1
λ
max
2
=
T
2
T
1
or
λ
max
2
=
λ
max
1
×
T
1
T
2
=
5000
×
1500
2500
=
3000
Å
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