Question

when the temperature of a radiated block body increases the maximum intensity of radiation
1) shift towards the largest wavelength
2)shift towards the shorter wavelength
3)remains unaffected
4)depends on the ambient temperature

Answer 1

From Wien's law

$$b=\lambda T$$

where

$$b=2.9\cdot 10^{-3} m$$

So, when the temperature of a radiated block body increases the maximum intensity of radiation shift towards the shorter wavelength.

Answer 2)