Electromagnetic Waves, Electromagnetic spectrum, characteristic of Electromagnetic waves,
Electromagnetic waves :
According to Maxwell,
the electromagnetic waves are those waves in which there are sinusoidal variation of electric and magnetic field vectors perpendicular to each other as well as right angles to the direction of waves propagation.
Notes :—
- these waves do not require any material medium for propagation.
- these waves travel in free space with a speed 3×10⁸ m/s
● Since, waves can be produced by moving a charged body or a magnet to and fro in an oscillating manner,
Relation between frequency and wavelength |
Electromagnetic spectrum:
The wavelength of different electromagnetic waves decreases in the following order👇👇
Radio waves > micro waves > Infra - red > Visible(Light) > ultraviolet rays > X-rays > γ-rays
Trick :
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I = Infra-red
L = Visible (Light)
U = ultraviolet rays
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