To explain:
with a sketch why the frequencies of long-wavelength waves of
Answer to Problem 3.14QA
Solution:
The frequencies of long-wavelength waves of electromagnetic radiations are lower than those of short-wavelength waves.
Explanation of Solution
1) Formula:
i.
ii.
2) Concept:
Frequency, wavelength and energy are related to each other by the above formula.
Let’s take an example of transition of electron from (a) n=3 to n=2 and (b) n= 3 to n=1
2. Calculations:
From the sketch and calculations, we can say that shorter transition of electron (n=3 to n=2), the wavelength is large thus frequency is short. And for longer transition of electron (n=3 to n=1), the wavelength is small therefore the frequency is large.
Conclusion:
The frequencies of long-wavelength wave of electromagnetic radiations are lower than those of short-wavelength waves.
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Chapter 3 Solutions
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