What is the wavelength of a sound wave?
For sound waves in air, the speed of sound is 343 m/s (at room temperature and atmospheric pressure). The wavelengths of sound frequencies audible to the human ear (20 Hz–20 kHz) are thus between approximately 17 m and 17 mm, respectively.
What is the correct order of wave number?
Which is the correct order of wave number of the following radiations: infrared, ultraviolet, X-rays and visible light? Visible light > Ultraviolet > X-rays > infrared. More wave number ⇒ more frequency ⇒ more energy.
What is the order of wavelength of visible light?
As the full spectrum of visible light travels through a prism, the wavelengths separate into the colors of the rainbow because each color is a different wavelength. Violet has the shortest wavelength, at around 380 nanometers, and red has the longest wavelength, at around 700 nanometers.
What is meant by radio waves?
Radio waves are a type of electromagnetic radiation with wavelengths in the electromagnetic spectrum longer than infrared light. Radio waves have frequencies as high as 300 gigahertz (GHz) to as low as 30 hertz (Hz). Radio waves are generated artificially by transmitters and received by radio receivers, using antennas.
What is the frequency of a radio wave?
radio waves: Designates a portion of the electromagnetic spectrum having frequencies ranging from 300 GHz to 3 kHz, or equivalently, wavelengths from 1 millimeter to 100 kilometers.
How far can radio waves travel?
Radio waves have the longest wavelengths in the EM spectrum, according to NASA, ranging from about 0.04 inches (1 millimeter) to more than 62 miles (100 kilometers). They also have the lowest frequencies, from about 3,000 cycles per second, or 3 kilohertz, up to about 300 billion hertz, or 300 gigahertz.
Can phones detect radio frequency?
Any devices that are used for transmitting data, such as radio receivers, TV antenna, WiFi routers and cell phones will use radio waves. Both kinds of frequencies can be detected with a handheld detector.
Can you see radio waves?
The electromagnetic spectrum describes all of the kinds of light, including those the human eye cannot see. Other types of light include radio waves, microwaves, infrared radiation, ultraviolet rays, X-rays and gamma rays — all of which are imperceptible to human eyes.