The property of light which remains unchanged when it travels from one medium to another is

Learning Objectives By the end of this section, you will be able to: • Explain the relationship between wavelength and frequency of sound • Determine the speed of sound in different media • Derive the equation for the speed of sound in air • Determine the speed of sound in air for a given temperature Sound, like all waves, travels at a certain speed and has the properties of frequency and wavelength. You can observe direct evidence of the speed of sound while watching a fireworks display ( Figure 17.4 When a firework shell explodes, we perceive the light energy before the sound energy because sound travels more slowly than light does. The difference between the speed of light and the speed of sound can also be experienced during an electrical storm. The flash of lighting is often seen before the clap of thunder. You may have heard that if you count the number of seconds between the flash and the sound, you can estimate the distance to the source. Every five seconds converts to about one mile. The velocity of any wave is related to its frequency and wavelength by 17.3 where v is the speed of the wave, f is its frequency, and λ λ is its wavelength. Recall from wavelength is the length of the wave as measured between sequential identical points. For example, for a surface water wave or sinusoidal wave on a string, the wavelength can be measured between any two convenient sequential points with the same height and slope, such as between two sequential crests or two sequential ...

We have learned that The Marching Soldiers But why does light refract? What is the cause of such behavior? And why is there this one exception to the refraction of light? An analogy of marching soldiers is often used to address this question. In fact, it is not uncommon that the analogy be illustrated in a Physics class with a student demonstration. A group of students forms a straight line (shoulder to shoulder) and connect themselves to their nearest neighbor using meter sticks. A strip of masking tape divides the room into two media. In one of the media (on one side of the tape), students walk at a normal pace. In the other media (or on the other side of the tape), students walk very slowly using baby steps. The group of students walk forward together in a straight line towards the diagonal strip of masking tape. The students maintain the line as they approach the masking tape. When an individual student reaches the tape, that student abruptly changes the pace of her/his walk. The group of students continues walking until all students in the line have entered into the second medium. The diagram below represents the line of students approaching the boundary (the masking tape) between the two media. On the diagram, an arrow is used to show the general direction of travel for the group of students in both media. Observe that the direction of the students changes at the "boundary." ahead. This occurs for every student in the line of students. Once a student reaches the boun...

This problem has been solved! You'll get a detailed solution from a subject matter expert that helps you learn core concepts. See Answer See Answer See Answer done loading Question:When light travels from one medium to another with a different index of refraction, how is the light's frequency and wavelength affected? A. When a light wave travels from a medium with a lower index of refraction to a medium with a higher index of refraction, the frequency changes and the wavelength does not. B. The frequency does change, but the wavelength When light travels from one medium to another with a different index of refraction, how is the light's frequency and wavelength affected? A. When a light wave travels from a medium with a lower index of refraction to a medium with a higher index of refraction, the frequency changes and the wavelength does not. B. The frequency does change, but the wavelength remains unchanged. C. Both the frequency and wavelength change. D. When a light wave travels from a medium with a lower index of refraction to a medium with a higher index of refraction, neither the wavelength nor the frequency changes. E. The frequency does not change, but its wavelength does.

Contents • When a beam of light enters from one medium to another the characteristic that remains constant is? • When light travel from one medium to another what does not change? • When a light travel from Medium A to D it will? • How does light travel from one point to another? • When light goes from rarer medium to denser medium then the relation between I and R is? • What happens when light goes from one medium to another? • Which factor remains constant when light travels in a different medium? • What is monochromatic beam of light? • Why does light bend when it passes from air into glass? • When monochromatic light travels from rarer to denser medium explain the following giving reasons? • What are the changes in the speed and in the wavelength of monochromatic light? • When monochromatic light passes from vacuum to a material medium and vice versa Which of the following characteristics of light beam does not changes? • How do light travels when it passes through a single medium? • Why does light travel slower in a medium? • How does light know the shortest path? • What happens when light travels from rarer medium to denser medium? • When light goes from rarer to denser medium it bends? • When light travels from rarer to denser medium it will have? • Which path does light travel? • Why do light travel in a straight line? • How fast does light travel? • Is the speed of light in vacuum? When the light travels from one medium to another, the velocity of light changes. T...

CONCEPT: • Refraction of Light:Thebending of the ray of light passing from one medium to the other mediumis called refraction. • The refraction of lighttakes place on going from one medium to another because the speed of light is different in the two media. • The greater the difference in the speeds of lightin the two media, the greater will be the amount of refraction. • A mediumin which the speed of light is moreis known as an optically rarer mediumand a mediumin which the speed of light is lessis known as an optically denser medium. EXPLANATION: • Since the frequencyof any lightwave depends on the source frequency.Frequency doesn't depend on the medium. • So whenever the light goes from one medium to another or vice versa, the frequency of lightand phase of light do not change. Therefore the option 3is correct. • However, the velocityof light,the wavelengthof light, and intensity dependon the medium, and hence the change. • Hence, when lightwaves are incident on an air-glass boundary, then the speed,direction,andbrightness of the light wave change. Therefore options 1 and2 are incorrect.

Refraction of Light We know that light is a form of energy and can undergo various phenomena like diffraction, reflection, refraction, interference, and polarisation. Refraction is the phenomenon that takes place due to the bending of light when it travels from medium to another. In this article, let us briefly understand the process of refraction. Table of Contents: • • • • • • • • What Is Refraction? Refraction is the bending of a wave when it passes from one medium to another. The bending is caused due to the differences in density between the two substances. Defining Refraction “Refraction is the change in the direction of a wave passing from one medium to another.” Refraction of light is one of the most commonly observed phenomena, but other waves like sound waves and water waves also experience refraction. Refraction makes it possible for us to have optical instruments such as magnifying glasses, lenses and prisms. It is also because of the refraction of light that we are able to focus light on our retina. Refraction in Nature Why do stars twinkle? Did you know that the twinkling effect of stars is due to atmospheric refraction? The starlight undergoes several refractions while reaching the Earth. This atmospheric refraction occurs in a medium of gradually changing refractive index. Read More: Watch the video and learn more about refraction Causes of Refraction Change of Speed Results in Change in Direction A light ray refracts whenever it travels at an angle int...