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ACTUALLY ! Its when the pencil enters the water .

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Where do the light waves coming from the pencil change speed?

The light waves coming from the pencil change speed when they move from air (faster speed) to the glass or water (slower speed). This change in speed causes the light waves to refract or bend.


How the appearance of the pencil and the change in speed of the light waves are related?

The appearance of the pencil is due to how light is reflected off its surface. When light waves hit the pencil, they can be absorbed, transmitted, or reflected. The change in speed of the light waves as they pass through the material of the pencil can affect how much light is reflected and perceived by our eyes, resulting in the appearance of the pencil.


How the appearance of the pencil and the change in speed of the light waves relate?

The appearance of a pencil (e.g., bending when immersed in water) is due to the change in speed of light waves as they pass from one medium to another. This change causes the light waves to refract, leading to the appearance of the pencil being altered from the observer's perspective.


How do the light waves coming from the pencil change speeds?

When light waves enter a material like glass or water, they slow down due to interactions with the atoms in the material. This change in speed is related to the optical density of the material, causing the light waves to bend, i.e., refract. Once the light waves exit the material, they resume their original speed in the air.


Where do the light waves coming from the pencil in the glass of water change speed?

The light waves change speed at the interface between the air and water, causing them to refract or bend. This occurs because light waves travel at different speeds in different mediums due to differences in their refractive indices.


Is this true Light waves do not change speed as they travel from air through water?

Light waves do change speed as they travel from air to water due to the change in the medium's refractive index. In general, light travels slower in water compared to air, causing a change in speed and resulting in the bending of the light waves known as refraction.


Why does a pencil seem to be split in to 2 when it is in water?

When a pencil is placed in water, light waves are refracted as they pass through the water, causing the pencil to appear bent or split. This is due to the change in speed of light as it moves from one medium (air) to another (water), creating an optical illusion that makes the pencil look split.


What property of light waves can be observed as light waves pass from one medium to another and change speed?

diffraction


When do light waves change speed?

speed of light is different for materials of different refractive index and also higher the refractive index lesser will be speed of light in that medium. so if light travels from rarer to denser medium (with respect to refractive index) then light waves will change their speed


If light waves change speed as they pass from one medium into another at an angle the light will be?

If light waves change speed as they pass from one medium into another at an angle, the light will be refracted, meaning it will bend as it enters the new medium. This bending is due to the change in speed of the light wave.


What is the speed of gravitiy?

Gravitational waves propagate at the speed of light. Any change in the distribution of masses will propagate at that speed.


When light waves slow down do they change direction?

When light waves slow down as they travel from one medium to another, such as from air to glass, they do change direction. This change in direction is called refraction and occurs due to the change in speed of the light waves in the new medium.