Q12.The heat radiated per unit area in 1 hour by a furnace whose temperature is 3000 K is (σ = 5.7× 10−8 W m−2 K−4 ) (1) 1.7 × 1010 J (2) 1.1 × 1012 J (3) 2.8 × 108 J (4) 4.6 × 106 J
What This Question Tests
This question applies Stefan-Boltzmann law to calculate the total heat radiated per unit area by a black body (furnace) at a given temperature over a specific time.
Concepts Tested
Formulas Used
E = σT⁴t
📚 NCERT Sections This Tests
12.5 — A Hydrogen Atom Initially In The Ground Level Absorbs A Photon,
Physics Class 12 · Chapter 12
12.5 A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of photon.
13.2 — Obtain The Binding Energy Of The Nuclei 5626Fe And 20983 Bi In Units Of
Physics Class 12 · Chapter 13
13.2 Obtain the binding energy of the nuclei 5626Fe and 20983 Bi in units of MeV from the following data: m ( 5626Fe ) = 55.934939 u m ( 20983 Bi ) = 208.980388 u
11.7 — The Work Function For A Certain Metal Is 4.2 Ev. Will This Metal Give
Physics Class 12 · Chapter 11
11.7 The work function for a certain metal is 4.2 eV. Will this metal give hotoelectric emission for incident radiation of wavelength 330 nm?
📋 Question Details
- Chapter
- Thermodynamics & KTG
- Topic
- Stefan's Law of Radiation
- Year
- 2012
- Shift
- 07 May Online
- Q Number
- Q12
- Type
- MCQ
- NCERT Ref
- Class 11 Physics Ch 11: Thermal Properties of Matter
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