Chapter 7, Problem 7.156IME

(a)

Interpretation Introduction

Interpretation:

The temperature at the surface of sun has to be estimated.

Concept Introduction:

Wien's displacement law:

It states that black body radiation curve at various temperature get higher at particular wavelength.  The mathematical equation for Wien’s law is given as

${\text{λ}}_{\text{max}}\text{=}\frac{\text{b}}{\text{T}}$

T is absolute temperature in kelvins.

b is a Wien's displacement constant.

(b)

Interpretation Introduction

Interpretation:

The astronomers able to determine temperature of star has to be explained.

Concept Introduction:

Wien's displacement law:

It states that black body radiation  curve at various temperature get higher at particular wavelength.  The mathematical equation for Wien’s law is given as

${\text{λ}}_{\text{max}}\text{=}\frac{\text{b}}{\text{T}}$

T is absolute temperature in kelvins.

b is a Wien's displacement constant.