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  4. A black body radiates at two temperatures T1 and T2 . Such that T1<T2 . The frequency corresponding to maximum intensity is

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Q. A black body radiates at two temperatures $ {{T}_{1}} $ and $ {{T}_{2}} $ . Such that $ {{T}_{1}}<{{T}_{2}} $ . The frequency corresponding to maximum intensity is

JamiaJamia 2011

Solution:

According to Wiens law, as T increases $ {{\lambda }_{m}} $ decreases and $ {{v}_{m}} $ increases. As $ {{T}_{1}}<{{T}_{2}} $ Therefore, $ {{v}_{{{m}_{1}}}}<{{v}_{{{m}_{2}}}} $