A) \[{{10}^{-4}}\,cm\]
B) \[{{10}^{-5}}\,cm\]
C) \[{{10}^{-6}}\,cm\]
D) \[{{10}^{-7}}\,cm\]
Correct Answer: A
Solution :
[a] The wavelength of infrared region is\[8\times {{10}^{-5}}cm\] to \[3\times {{10}^{-3}}\,cm\]. So maximum wavelength of infrared region \[=8\times {{10}^{-5}}\,cm\approx {{10}^{-4}}\,cm\].
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