The radiation energy density per unit wavelength at a temperature T has a maximum at a wavelength \[{{\lambda }_{0}}\]. At temperature \[2T\], it will have a maximum at a wavelength

• A. 4\[{{\lambda }_{0}}\]
• B. 2\[{{\lambda }_{0}}\]
• C. \[{{\lambda }_{0}}\]/2
• D. \[{{\lambda }_{0}}\]/4