Thermal Properties of Matter
Class 11 · Thermal Properties of Matter · Practice
Radiation (Stefan–Boltzmann) — Previous-Year Questions
5 previous-year questions on Radiation (Stefan–Boltzmann), drawn from JEE Mains, JEE Advanced, NEET UG, and CUET papers. Every question carries a worked-out explanation.
Q1. Power radiated by a black sphere (ε = 1) of area 1 m² at 1000 K:
JEE 2022Q2. If T doubles, radiated power changes by factor:
JEE 2021Q3. Peak wavelength of sunlight from T = 6000 K (Wien's law):
JEE 2020Q4. Heat radiation requires:
JEE 2019Q5. Emissivity of a perfect black body:
JEE 2018Radiation (Stefan–Boltzmann) previous-year questions from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 11 physics practice for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG candidates.