alleryDimensional formula of Stefan-Boltzmann constant σ (P = σAT⁴):
AMT⁻³K⁻⁴ (= power/(area × T⁴) = MT⁻³/K⁴)
BM
CRandom
DML
Answer & Solution
Correct answer: A. MT⁻³K⁻⁴ (= power/(area × T⁴) = MT⁻³/K⁴)
P/A = σ T⁴.
P/A has dim MT⁻³ (power per area = W/m² = J/(s m²)). T⁴ has K⁴.
We have So [σ] = MT⁻³/K⁴.
So So [σ] = MT⁻³K⁻⁴.
**SI value:** 5.67 × 10⁻⁸ W m⁻² K⁻⁴.
Keep practising Unit 2A: Newton's Laws and Translational Equilibrium
Browse all Unit 2A: Newton's Laws and Translational Equilibrium questions for AP Physics 1, or explore more Physics topics.
Related questions
At what temperature does kT equal 1 eV?A car travels 100 km at 50 km/h, then 100 km at 100 km/h. Average speed:Photon of wavelength 200 nm strikes metal with work function 2 eV. KE of fastest photoelecWork done in stretching wire by 1 mm is W. Work to stretch it by 2 mm (same wire, within eMagnetic flux through a coil changes from 5 mWb to 1 mWb in 0.1 s. Induced EMF:Bohr radius for hydrogen is 0.53 Å. Radius of 3rd orbit:Two coherent sources of intensity I and 4I interfere. Maximum intensity in resulting patteFor a body in SHM with amplitude A, at displacement x, ratio of KE to total energy: