Three discs A, B and C having radii 2, 4, and 6 cm respectively are coated with carbon *****. Wavelength for maximum intensity for the three discs are 300, 400 and 500 nm respectively. If QA, QB and QC are power emitted by A, B and C respectively, then
(A) QA will be maximum
(B) QB will be maximum
(C) QC will be maximum
(D) QA = QB = QC
