Propagation of Light
Propagation of Light
Light travels along straight lines in a medium or in vacuum. The path of light changes only when there is an object in its path or where the medium changes. We call this rectilinear (straight-line) propagation of light. Light that starts from a point A and passes through another point B in the same medium actually passes through all the points on the straight-line AB. Such a straight-line path of light is called a ray of light.
Light rays start from each point of a source and travel along straight lines till they fall on an object or a surface separating two media (mediums). A bundle of light rays is called a beam of light.
Three main processes generally occur when light passes between boundaries from one medium to another.
Light travel in _______________________ . | |||
| Right Option : C | |||
| View Explanation | |||
Which of the following are correct ? (a) Light travels along straight lines in a medium or in vacuum. (b) The refraction is the change in the direction of wave passing from one medium to other. (c) A medium in which light cannot travel is called opaque. Wood, metals, bricks, etc . | |||
| Right Option : D | |||
| View Explanation | |||
Which of the following are correct : (a) The path of light changes only when there is an object in its path or where the medium changes. (b) A bundle of light rays is called a beam of light. (c) A medium in which light cannot travel is called transparent. | |||
| Right Option : A | |||
| View Explanation | |||
Students / Parents Reviews [10]
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
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Barkha Arora
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Cheshta
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Hiya Gupta
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10thA marvelous experience with Abhyas. I am glad to share that my ward has achieved more than enough at the Ambala ABHYAS centre. Years have passed on and more and more he has gained. May the centre flourish and develop day by day by the grace of God.
