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WAEC Physics 2023 Paper
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© africaexams.com
Question : 27
Total: 50
The range of wavelengths of the infrared waves in an electromagnetic spectrum is
10
−
3
m
to
10
−
6
m
. The wavelength of the radiation is
longer than
10
−
6
m
.
shorter than
10
−
6
m
.
shorter than
10
3
m
.
longer than
10
3
m
.
Validate
Solution:
The range of wavelengths for infrared waves is given as
10
−
3
m
to
10
−
6
m
. This means that the wavelength of the radiation is longer than
10
−
6
m
but shorter than
10
−
3
m
l
. Therefore, the only correct option is that the wavelength is longer than
10
−
6
m
.
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