Interpretation: The wavelength of radiation of a given frequency needs to be determined. Whether this radiation has a longer or shorter wavelength than red light needs to be explained.
Concept Introduction: The relation between wavelength and frequency of radiation is as follows:
Here,
Answer to Problem 15SP
20000 nm, a longer wavelength than red light.
Explanation of Solution
From the given frequency of radiation, the wavelength can be calculated as follows:
Rearranging the above formula,
Here, the value of the speed of light is constant that is
Substitute the values in the above formula,
Here,
Thus,
This can be converted into nm using the below conversion:
Thus,
Now, the wavelength of red-light ranges from 620-720 nm thus, the given radiation has a longer wavelength than red light.
Thus, the wavelength of radiation of a given frequency is 20000 nm. Also, this radiation has a longer wavelength than red light.
Chapter 5 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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