   Chapter 6.7, Problem 3.1ACP

Chapter
Section
Textbook Problem

Helium absorbs light at 587.6 nm. What is the frequency of this light?

Interpretation Introduction

Interpretation: The frequency of the light absorbed by Helium gas has to be calculated.

Concept introduction:

• The frequency of the light is inversely proportional to its wavelength.

ν=cλwhere, c=speedoflightν=frequencyλ=wavelength

Explanation

The frequency of the light absorbed by Helium gas is calculated below.

Given,

The wavelength of light is 587.6 nm=5.876 ×107m.

The speed of light is c=2.998×108m/s.

The frequency of the light absorbed by Helium gas is calculated by using the equation,

ν=cλ

Substituting the values,

ν=cλ=2

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