Question

Analyzing the spectra of stars, the hottest stars are
A. red
B. orange
C. bluish white
D. there is no correlation between color and temperature

Answer 1

Hint: In order to solve this question, we should know the relation between the wavelength of color and the temperature depending on it. We know that wavelength of color and temperature are proportional to each other.

Complete step by step answer:
The temperature of the stars are depending on their colors of the star and this can be found by using wien's displacement law. Larger the temperature of the star, smaller is their wavelength of color. We can classify stars by their spectral lines. Spectral differences due to TemperatureThus, for a particular color of star given, red has a longer or maximum wavelength and hence temperature range is lower or smaller, while bluish white having the smaller or lesser wavelength and it has highest temperature. Thus, the bluish-white color star that emits maximum temperature.Orange color temperature range is 3500K-5000K hence it cannot be a correct option.

Hence the correct option is C.

Note: Hotter stars appear for blue is approximately temperature range given by 10,000K-50,000 K and middle stars appear for yellow temperature range approximately~6000K and cool stars appear red temperature range ~3000K.