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# Which of the following will affect the speed of an electromagnetic wave?

## Which of the following will affect the speed of an electromagnetic wave?

The only variables which will alter the speed of an electromagnetic wave are the properties of the medium. The speed of a wave is often calculated as the product of frequency and wavelength.

## How is the speed of an electromagnetic wave affected by a medium?

The actual speed of an electromagnetic wave through a material medium is dependent upon the optical density of that medium. Different materials cause a different amount of delay due to the absorption and reemission process.

What does an electromagnetic wave depend on?

The energy of electromagnetic waves depends on their frequency. Low-frequency waves have little energy and are normally harmless. High-frequency waves have a lot of energy and are potentially very harmful.

### How fast do electromagnetic waves travel in a vacuum?

300,000,000 metres per second
A large family of waves, each with a different wavelength range is called the electromagnetic spectrum (sometimes shortened to the EM spectrum). These waves all travel at the speed of light (300,000,000 metres per second) in a vacuum.

### What type of electromagnetic waves is the fastest?

The electromagnetic wave that travels the fastest through space is gamma ray Explanation: Electromagnetic wave is a type of wave which does not require material medium for its propagation.

What are electromagnetic waves have the most energy?

As the wavelengths of electromagnetic waves get shorter, their energy increases. Gamma rays are the shortest waves in the spectrum and, as a result, have the most energy. Gamma rays are sometimes used in treating cancer and in taking detailed images for diagnostic medicine.

#### What is the formula for electromagnetic waves?

So our formula for EM waves (in vacuum) is: c=f⋅λ;c=3⋅108m s. The continuum of various wavelengths and frequencies for EM waves is called the Electromagnetic Spectrum. It turns out that the speed of light is also the ratio of the strengths of the Electric and Magnetic fields in an EM wave.

#### Do electromagnetic waves have the same velocity?

In any one material, all electromagnetic waves have the same speed. But of course, since they may be traveling up, down, left, right, or slanty, they don’t all have the same velocity.