Physical World Units and Measurements - Result Question 4

«««< HEAD:content/english/neet-pyq-chapterwise/physics/physical-world-units-and-measurements/physical-world-units-and-measurements-result-question-4.md

4. The unit of the Stefan-Boltzmann’s constant is

======= ####4. The unit of the Stefan-Boltzmann’s constant is

3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed:content/english/neet-pyq-chapterwise/physics/physical-world-units-and-measurements/physical-world-units-and-measurements—result-question-4.md (a) $W / m^{2} K^{4}$

(b) $W / m^{2}$

(c) $W / m^{2} K$

(d) $W / m^{2} K^{2}$

[2002]

Show Answer

Answer:

Correct Answer: 4. (a)

Solution:

  1. (a) According to Stefan’s law, $E=\sigma AT^{4}$ where, $E$ is energy dissipated per second, $A=$ surface area $T=$ absolute temperature

$\sigma=\frac{E}{A T^{4}}=\frac{W}{m^{2} K^{4}}$