Question 391: Properties of Matter

Question

A black body at 1227
o
C emits radiations with maximum intensity at a wavelength of 5000 $\mathop A\limits^ \circ  $. If the temperature of the body is increased by 1000
o
C, the maximum intensity will be observed at

Accepted Answer

Applying Wein's displacement law,
${\lambda _m}T = contant$
$5000{\bf{{ÃÂ}}} 	imes \left( {1227 + 273} ight) = \left( {2227 + 273} ight) 	imes {\lambda _m}$
${\lambda _m} = {{5000 	imes 1500} \over {1000}} = 3000ÃÂ$

Answer

3000 $\mathop A\limits^ \circ  $

Answer

4000$\mathop A\limits^ \circ  $

Answer

5000$\mathop A\limits^ \circ  $

Answer

6000$\mathop A\limits^ \circ  $

Properties of Matter

A black body at 1227 o C emits radiations with maximum intensity at a wavelength of 5000 \mathop A\limits^ \circ . If the temperature of the body is increased by 1000 o C, the maximum intensity will be observed at

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