What is electromagneticwaves

Physics

2 answers:

Vesna [10]3 years ago

8 0

Answer:

Electromagnetic waves or EM waves are waves that are created as a result of vibrations between an electric field and a magnetic field.

Explanation:

In other word, EM waves are composed of oscillating magnetic and electric fields. They are also perpendicular to the direction of the EM wave. It can be split into a range of frequencies. This is known as the electromagnetic spectrum. Examples : radio wave, microwave,X-rays etc

Hope this will work to u

Elis [28]3 years ago

4 0

Answer:

waves that are created as a result of vibrations between an electric field and a magnetic field

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nika2105 [10]

Answer:

0.000003782 m

0.000001891 m

0.000001197125 m

Explanation:

$\lambda$ = Wavelength = 248 nm

D = Diameter of beam = 1 cm

f = Focal length = 0.625 cm

The angle is given by

$\theta=\dfrac{1.22\lambda}{D}$

The width is given by

$d=2\theta f\\\Rightarrow d=2\dfrac{1.22\lambda f}{D}\\\Rightarrow d=2\dfrac{1.22\times 248\times 10^{-9}\times 6.25\times 10^{-2}}{1\times 10^{-2}}\\\Rightarrow d=0.000003782\ m$