PHYSICS · Single correct · CBSE · Physics · Thermal Properties of Matter · Thermal Properties of Matter
Problem
Three discs A, B and C having radii 2, 4, and 6 cm respectively are coated with carbon black. 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
(1) QA will be maximum
(2) QB will be maximum
(3) QC will be maximum
(4) QA=QB=QC