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When light rays move from one medium to another, they bend because of varying speeds in different mediums. What is this phenomenon called?
- a)Radiation
- b)Convection
- c)Insulation
- d)Refraction
Correct answer is option 'D'. Can you explain this answer?
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When light rays move from one medium to another, they bend because of ...
Explanation:
Refraction:
Refraction is the phenomenon where light rays change direction as they pass from one medium to another. This is caused by the change in the speed of light in different mediums.
Speed of Light:
The speed of light is different in different mediums due to their varying optical densities. When light passes from a medium with a lower optical density to a medium with a higher optical density, it slows down and bends towards the normal line. On the other hand, when light passes from a medium with a higher optical density to a medium with a lower optical density, it speeds up and bends away from the normal line.
Bending of Light:
The bending of light during refraction is caused by the change in the direction of the light wave as it enters a new medium. This change in direction is due to the difference in the speed of light in the two mediums.
Example:
A common example of refraction is when light passes from air to water. The speed of light is greater in air compared to water, so when a light ray enters the water, it slows down and bends towards the normal line.
Applications:
Refraction has various practical applications, such as:
- Lenses used in eyeglasses and cameras utilize refraction to focus light.
- The phenomenon of mirages is also a result of refraction.
- Refraction is also used in the design of optical instruments like microscopes and telescopes.
In conclusion, when light rays move from one medium to another, they bend due to the difference in the speed of light in the two mediums. This phenomenon is known as refraction.
Refraction:
Refraction is the phenomenon where light rays change direction as they pass from one medium to another. This is caused by the change in the speed of light in different mediums.
Speed of Light:
The speed of light is different in different mediums due to their varying optical densities. When light passes from a medium with a lower optical density to a medium with a higher optical density, it slows down and bends towards the normal line. On the other hand, when light passes from a medium with a higher optical density to a medium with a lower optical density, it speeds up and bends away from the normal line.
Bending of Light:
The bending of light during refraction is caused by the change in the direction of the light wave as it enters a new medium. This change in direction is due to the difference in the speed of light in the two mediums.
Example:
A common example of refraction is when light passes from air to water. The speed of light is greater in air compared to water, so when a light ray enters the water, it slows down and bends towards the normal line.
Applications:
Refraction has various practical applications, such as:
- Lenses used in eyeglasses and cameras utilize refraction to focus light.
- The phenomenon of mirages is also a result of refraction.
- Refraction is also used in the design of optical instruments like microscopes and telescopes.
In conclusion, when light rays move from one medium to another, they bend due to the difference in the speed of light in the two mediums. This phenomenon is known as refraction.
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When light rays move from one medium to another, they bend because of varying speeds in different mediums. What is this phenomenon called?a)Radiationb)Convectionc)Insulationd)RefractionCorrect answer is option 'D'. Can you explain this answer?
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