# What is the frequency of an electromagnetic wave if it has a wavelength of 1 km?

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Those who are looking for an answer to the question «What is the frequency of an electromagnetic wave if it has a wavelength of 1 km?» often ask the following questions:

### 👋 How are frequency and wavelength of an electromagnetic wave related?

The higher the frequency, the shorter the wavelength. In all electromagnetic waves, frequency(in hertz) times wavelength (in meters) equals to 300 000 000 meters per second (wave speed).

- The frequency and wavelength of electromagnetic waves?
- What kind a wavelength an frequency would a low energy electromagnetic wave?
- How are the frequency and wavelength of an electromagnetic wave related?

### 👋 How are wavelength and frequency of an electromagnetic wave related?

- When
**the**frequency**is**multiplied by**the wavelength**, it yields**the**speed**of the wave**.**Electromagnetic**waves always move at**the**same speed in**a**vacuum, known as the speed**of**light. It equals 299,792,458 meters per second. Light is an**electromagnetic wave**, and as such has frequency and wavelength.

- As the wavelength of an electromagnetic wave increases the frequency of the wave?
- As the frequency of an electromagnetic wave increases what does the wavelength do?
- What is wavelength of an electromagnetic wave that has a 1 hz frequency?

### 👋 Which electromagnetic wave has the longest wavelength and lowest frequency?

**Radio Waves** -- The waves in the electromagnetic spectrum that have the longest wavelengths and lowest frequency are called radio waves.

- The longest wavelength is what electromagnetic wave?
- What electromagnetic wave has the longest wavelength?
- How are wavelength frequency intensity and energy related in an electromagnetic wave?

1 other answer

300 Khz which is down below the AM broadcast band. (AM broadcast starts at 550 KHz and goes up from there.)

We've handpicked 22 related questions for you, similar to «What is the frequency of an electromagnetic wave if it has a wavelength of 1 km?» so you can surely find the answer!

How do you find the frequency and wavelength of an electromagnetic wave?So basically the wavelength times the frequency of an electromagnetic wave equals the speed of light. FYI, λ is the Greek letter lambda , and ν is the Greek letter nu (it is not the same as a v). To find wavelength ( λ ), the equation is manipulated so that **λ=cν .**

Radio waves have the lowest frequency and longest wavelength there arent any sub-catagories it just goes (lowest to highest in frequency) Radio wave, microwave, infrared, Visible light, ultra violet light, x-ray, then gamma ray with the shortest wavelength and highest frequecy

As wavelength goes up, the frequency comes down.

You need to the speed of the wave (the speed of light) by the wavelength. Be sure to convert everything to compatible units first; for example, you may need to convert the km to meters.

frequency x wavelength = speed of the wave. This applies to all waves, not just to electromagnetic waves.

Wavelength = speed/frequency = 300 million meters

Wavelength = speed/frequency = 300 million meters per second/1 per second = 300 million meters.

The electromagnetic spectrum includes, from longest wavelength to shortest: **radio waves**, microwaves, infrared, optical, ultraviolet, X-rays, and gamma-rays.

Gamma-rays

radio waves

As the wavelength of an electromagnetic wave decreases, its frequence increases. This is true not only for electromagnetic waves, but for mechanical wave and matter wave as well.

425,000 Hz: λ = about 0.438 miles.

- All
**electromagnetic**waves**are**just light photons, so they travel at**the**speed**of**light c, and so we get, Since**the**speed of light**in**an empty space, a vacuum, is constant, we can define**the**equation as, where k is a constant. So,**the**frequency is inversely proportional to the wavelength. Increasing wavelength decreases frequency, and vice-versa.

The electromagnetic spectrum (EMS) is the general name given to the known range of electromagnetic radiation. Wavelengths increase from **approximately 10 ^{-}^{18} m to 100 km**, and this corresponds to frequencies decreasing from 3 × 10

^{26}Hz to 3 ×10

^{3}Hz.

**Gamma rays** have the highest energies, the shortest wavelengths, and the highest frequencies.

Frequency = (speed) / (wavelength) = (3 x 108) / (3 x 108) = 1 Hz

The distance light takes to travel in a second (just less than 30000000metres).

The wavelength is w=c/f = 3E9/3E3 m = 1E6 meters.

Wavelength = (speed)/(frequency) = 300,000,000m/s/3,000(1/s) = 100,000 meters or 100 km

An electromagnetic wave has a velocity "c", the universal wave equation velocity = wavelength * frequencythe wavelength then equal c / frequencythen the wavelength of that wave is : Lambda= c / Nu= 299792458 / 3*1000000 = 99.930819333333333333333333333333 meters ~ 100 meters(Lambda is the wavelength, Nu is the frequency).====================================To summarize:Wavelength = (speed) / (frequency) = (3 x 108) / (3 x 106) = 102 = 100 meters, in vacuum

- B)
**The**wavelength**is**inversely proportional to**the**speed of**the wave**. C)**The**wavelength**is the**same for all types of**electromagnetic**waves. D)**The**wavelength**is**directly proportional to**the**frequency of**the wave**. E)**The**wavelength is inversely proportional to the frequency of the wave. 9.

#### How to calculate wavelength

- Determine the frequency of the wave. For example, f = 10 MHz …
- Choose the velocity of the wave…
- Substitute these values into the wavelength equation λ = v/f .
- Calculate the result…
- You can also use this tool as a frequency calculator.