Which of these is true of light waves?

Q: A wavelength of infrared radiation emitted is 25 mm (2.5 x 10-2 m). Show that the energy per photon…

A: Given : Wavelength (λ) = 25 mm = 2.5 x 10-2 m Speed of electromagnetic waves (c) = 3 x 108 m/s To…

Q: When sunlight enters the earth's atmosphere, state which color of light is scattered (i) the most…

A: When sunlight enters the earth’s atmosphere, violet colour is scattered the most and red the least…

Q: In what region of electromagnetic spectrum is the resonant frequency of electrons in glass?

A: Vibrating electric fields and magnetic fields together creates electromagnetic waves.

Q: At noon the sun appears white as a) light is least scattered b) all the colours of the white light…

A: In order to reach the earth through the atmosphere, light has to travel a shorter distance only…

Q: How does the direction of polarization of light compare with the direction of vibration of the…

A: Explanation:

Q: In a light wave, the electric field and magnetic field are to each other.

A:

Q: Fluorescent lights tend to emit less of what color?

A: A Fluorescent tube is a low pressure mercury vapour gas discharge lamb that used the property of…

Q: What Is The Principle Of Reversibility of light?

A: The principle of reversibility of light states that light follows the same path if the direction of…

Q: What about diffraction of light?

A: Diffraction is a result of superposition of two different Secondary wavelets coming from different…

Q: waves

A: Electromagnetic wave waves are a propagating pair of electric and magnetic field components, and the…

Q: Does light have mass?

A: Light is defined as packets of energy. those packets of energy is called Photons.

Q: How far does light travel?

A:

Q: What are the evidences to support that light is a wave?

A:

Q: Which of the following physicists discovered that white light was a combination of all colours of…

A:

Q: Name two electromagnetic waves of wavelength smaller than that of violet light. State one use of…

A: Ultraviolet rays have wavelengths between 10 nm and 400 nm. They are used for detecting purity of…

Q: orange-violet-yellow-red-brown and Ω %

A:

Q: Your friend goes on to say that light is produced by the connection between electricity and…

A: A changing in electric field can induces a magnetic field and a changing in the magnetic field can…

Q: Why are light waves able to travel through a vaccum whereas sound waves cannot?

A: Speed of sound: The speed of sound is the distance travelled by a sound wave per unit of time. The…

Q: When does light behave as a wave? When does it behave as a particle?

A:

Q: Which travels faster through a vacuum - an infrared ray or a gamma ray?

A: Infrared and gamma rays are electromagnetic waves. So they travel at 3×108m/s in vacuum.

Q: What is meant by scattering of light?

A:

Q: How is the wavelength of light related to its frequency?

A: Wavelength is defined as it is the distance between the identical points in the adjacent cycles of…

Q: About how much of the measured electromagnetic spectrum does light occupy?

A: An electromagnetic spectrum consists of wise range of waves.  Gamma Rays, X rays, Ultraviolet rays,…

Q: How does incident light that falls on an object affect the motion of electrons in the atoms of the…

A: When light with a certain frequency is incident on an object it can be absorbed, reflected or…

Q: Which color of white light is scattered the least? Give reason.

A: In the process of scattering, colour having long wavelength will scatter the least while one having…

Q: What is the energy associated with this wavelength of light?

A: Given wavelength λ= 587.5 nm Now, Energy given E=hcλwhere h=6.626*10-34             c=3*108 So,…

Q: The speed of light is faster through a substance with an index of refraction of 1.2 versus a…

A: Given Information:- Refractive index of the first substance is n1=1.2 Refractive index of the second…

Q: What color has the shortest wavelength?

A: Violet color has shortest wavelength.

Q: Which characteristic of light remains unchanged when it travels from vacuum to some medium?

A: The velocity and wavelength changes as the medium changes. The frequency remains constant if the…

Q: How does the ditrection of polarization of light compare with the direction of vibration of the…

A:

Q: As frequency increases, what happens to the energy of light?

A:

Q: When light strikes a red piece of paper, red light gets and other colors get transmitted reflected…

A: Object appears in different colours because of absorbing some of the colours or wavelengths and…

Q: When does a light beam have only a single frequency?

A: A light beam can never have only one frequency even a photon never has only one frequency. These…

Q: What is the order of the electromagnetic spectrum?

A: To determine the order of the Electromagnetic spectrum.

Q: When light goes from a more dense medium to a less dense one,

A: Refraction is the phenomena of light in which light bends when passing through one transparent…

Q: Name two dangers of visible light?

A: The visible light is a part of electromagnetic radiation. The wavelength range is 400 nm to 700 nm.…

Q: What is it, exactly , that waves in a light wave?

A: Light is an electromagnetic radiation. It can travel through vacuum and doesn’t require a material…

Q: if light is coming in from a less dense object to a denser object, how does it react?

A: According to Snell's law, when light travels from rarer medium to denser medium it bend towards the…