Three discs A, B and C having radii 2, 4, and 6 cm respectively are coated with carbon…
Physics · JEE Advanced · NTA Exams — Thermodynamics
Three discs A, B and C having radii 2, 4, and 6 cm respectively are coated with carbon black. Wavelengths for maximum intensity for the three discs are 300, 400 and 500 nm respectively. If QA, QB and QC are powers emitted by A, B and C respectively, then
- QA will be maximum
- QB will be maximum
- QC will be maximum
- QA = QB = QC
Answer
(C) Q C will be maximum
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