Infrared rays
Tested in 2 real MPSC questions across 1 year (2023–2023). See it in context on the interactive Concept Graph →
Years it was asked
What you need to know first
Properties of EM waves
Real questions that test this
खालीलतील तापमानावर (300 के) वस्तुद्वारे उत्सर्जित होणाऱ्या औषणीय प्रारणासाठी महत्वपूर्ण योगदान तरंगलांबी किती असते ? / At room temperature (300k), what is the significant contribution wavelength for the thermal radiation emitted by a body ?
1)500 नॅनो मीटर / 500 nm
2)9550 नॅनो मीटर / 9550 nm
3)1500 नॅनो मीटर / 1500 nm
4)3000 नॅनो मीटर / 3000 nm✓ Correct
According to Wien's displacement law, the wavelength corresponding to maximum emission for a body at 300K (room temperature) falls in the infrared region.