Electromagnetic Waves and Communication System — Physics STD 11 Science — Question
Maharashtra BoardEnglish MediumSTD 11 SciencePhysicsElectromagnetic Waves and Communication System2 Marks
Question
State different units used for wavelength of electromagnetic waves.
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Answer
$1.$ The $\text{SI}$ unit of wavelength of electromagnetic waves is metre $(m).$
$2.$ Small wavelengths are represented by micrometre $(µm),$ angstrom $( \mathring A ),$ nanometre $(nm)$ etc.
$[$ Note : $A = 10^{-10} m = 10^{-8} cm, 1 \ µm = 10^{-6} m, 1 \ nm = 10^{-9} m.]$
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