# When the frequency of an electromagnetic wave is decreased?

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As the frequency decreases, the wavelength gets longer. There are two basic types of waves: mechanical and electromagnetic.

## What happens when the frequency of a wave decreases?

That means the wavelength shortens. So, as frequency increases, wavelength decreases. The opposite is also true—as frequency decreases, wavelength increases.

## How does the frequency of an electromagnetic wave change when the wavelength decreases?

The frequency of an electromagnetic wave increases as wavelength decreases. As wavelength decreases (and frequency increases) energy increases.

## What determines the frequency of an electromagnetic wave?

Frequency is determined by the amount of wavelengths that pass in one second. … The frequencies of the electromagnetic waves emitted by an object increase as the temperature increases. The sun is much hotter than the earth, and so emits more higher frequency electromagnetic radiation.

## Does frequency of light change in water?

As light moves from air into water, it not only slows, but the wavelength changes. The animation below illustrates how the wavelength becomes shorter in the denser medium of water. … Interestingly enough, the frequency of the waves does not change as the light moves from air to water.

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## How can you change the frequency of the wave?

Frequency doesn’t change because it depends on travelling of waves across the interface. But speed and wavelength change as the material on the other side may be different, so now it might have a longer/shorter size of wave and so the number of waves per unit time changes.

## What increases when a wave period decreases?

Answer: the frequency of the wave.

## What is relation between frequency and wavelength?

Wavelength and frequency of light are closely related. The higher the frequency, the shorter the wavelength. Because all light waves move through a vacuum at the same speed, the number of wave crests passing by a given point in one second depends on the wavelength.

## What causes the frequency of a wave?

The number of waves that pass a fixed point in a given amount of time is wave frequency. Wave frequency can be measured by counting the number of crests (high points) of waves that pass the fixed point in 1 second or some other time period. The higher the number is, the greater the frequency of the waves.

## Do higher frequency waves travel faster?

Comparing two waves of the same wavelength, a higher frequency is associated with faster movement. Comparing two waves of different wavelengths, a higher frequency doesn’t always indicate faster movement, although it can. Waves of different wavelengths can have the same frequency.

## What is meant by frequency?

Frequency, in physics, the number of waves that pass a fixed point in unit time; also, the number of cycles or vibrations undergone during one unit of time by a body in periodic motion.

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Gamma rays

## Why is light an electromagnetic wave?

As light is produced by the acceleration of charged particles & from law of electromagnetism that states that: an accelerated charge produce electromagnetic wave,light is an electromagnetic wave. Actually light is the transfer of energy from one part of electromagnetic field to other.

## Can we change frequency of light?

Frequency of light does not ever change, as long as you can be sure that the photons are the same as the photons at the beginning. … So, in passing from one material to another, light changes wavelength proportionally to the change of speed, so that the ratio v/L=f remains constant.

## What is the frequency of light in water?

In water, for example, which has n = 1.333, the range of visible wavelengths is 380 nm1.333 380 nm 1.333 to 760 nm1.333 760 nm 1.333 , or λn = 285 to 570 nm. Although wavelengths change while traveling from one medium to another, colors do not, since colors are associated with frequency.

## Does frequency depend on medium?

Frequency, in physics, is the number of crests that pass a fixed point in the medium in unit time. So it should depend on the source, not on the medium. … Think of frequency in the equation as a constant since it only depends on the source– so if now speed changes (i.e. medium changes), then only wavelength changes! 