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  1. The distance between two successive crests or two successive troughs of either electric or magnetic waves is called as wavelength (λ). It is denoted by Greek letter lambda. 

Units of wavelength.

UNITS

SYMBOLIC REPRESENTATION

Angstrom

Ao

Nanometre

Nm

Micrometer

µm

Centimetre

Cm

Meter

M

The following are relations between different units

1Ao=10-8cm =10-10m=0.1nm

1nm=107cm=109m=106µm

1µm=10-4cm=10-6m=10-3nm

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