1.

Which of the following represents an infrared wavelength [CPMT 1975; MP PET/PMT 1988]

A.            \[{{10}^{-4}}\] cm              
B.            \[{{10}^{-5}}\] cm
C.            \[{{10}^{-6}}\]cm               
D.            \[{{10}^{-7}}\]cm
Answer» B.            \[{{10}^{-5}}\] cm


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