SOLAR SYSTEM

UNIVERSE

SOLAR STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The temperature of the photosphere is determined precisely by:
A
measuring the spectrum of sunlight then using Wein’s Law
B
using a thermometer attached to a spacecraft
C
running algorithms from a computer simulation
D
estimating the temperature required to burn coal, which is what the sun is made up of
Explanation: 

Detailed explanation-1: -Wien’s displacement law states that the black-body radiation curve for different temperatures will peak at different wavelengths that are inversely proportional to the temperature.

Detailed explanation-2: -The color of light a star emits is related to its temperature. This means that we can determine the effective temperature of the Sun by measuring the amount of light it emits at each wavelength and comparing the resulting spectrum we see to models.

Detailed explanation-3: -Wien’s fifth power law says that emissive power is proportional to the temperature raised to the fifth power. On the other hand, the Stefan–Boltzmann law says emissive power is proportional to the temperature raised to the fourth power.

Detailed explanation-4: -Stefan-Boltzmann law, statement that the total radiant heat power emitted from a surface is proportional to the fourth power of its absolute temperature.

There is 1 question to complete.