Question

Select Light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. Then, select the start button at the source location to begin producing the waves. Light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. The wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. The amplitude of the wave at the location of the probe is equal to the maximum electric field measured. How does the amplitude of the wave depend on the distance from the source?

Answer 1

The amplitude of an electromagnetic wave, such as light, does not depend on the distance from the source. It represents the wave's intensity or brightness.

Step-by-step explanation:

The amplitude of the wave does not depend on the distance from the source. The amplitude of an electromagnetic wave, such as light, is the maximum strength of the electric and magnetic fields. It represents the wave's intensity or brightness. As the wave travels away from the source, it may spread out and decrease in intensity, but the amplitude itself remains constant.

Answer 2

here as we increase the distance the intensity will decrease and hence the amplitude of the electric field will decrease and vice-versa

Step-by-step explanation:

As wee know that the amplitude of the wave will decide the energy of the wave

Here we know that energy density of electromagnetic wave is given as

`u = (1)/(2)\epsilon_0E_0^2`

now we have

`(I)/(c) = (1)/(2)\epsilon_0 E_0^2`

so here we can say that intensity of the wave at the given distance from the source is given by formula

`I = (P)/(4\pi r^2)`

so here as we increase the distance the intensity will decrease and hence the amplitude of the electric field will decrease and vice-versa.