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प्रश्न
What is meant by the ‘angle of incidence’ for a ray of light?
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उत्तर
The angle between the incident ray and the normal (at the point of incidence) is called the angle of incidence.
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संबंधित प्रश्न
Name the phenomenon responsible for the following effect:
When we sit in front of a plane mirror and write with our right hand, it appears in the mirror that we are writing with the left hand.
Which property of light makes a pencil cast a shadow when it is held in front of a light source?
What is the difference between regular reflection of light and diffuse reflection of light?
With the help of a labelled ray-diagram, describe how a plane mirror forms an image of a point source of light placed in front of it. State the characteristics of the image formed in a plane mirror.
Fill in the following blank with suitable word:
Light bends when is passes from water into air. We say that it is ............
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Show the lateral displacement of the ray on the diagram.
A vertical ray of light strikes the horizontal surface of some water:
What is the angle of refraction?
Water is optically denser than glass.
Match the Following
| Column A | Column B |
| (a) white Light | (1) Convex mirror |
| (b) Refraction | (2) Concave mirror |
| (c) Virtual images | (3) refraction |
| (d) Real images | (4) spectrum |
| (e) Prism | (5) ray of light from glass to air |
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Explain how the formation of a rainbow occurs.
The speed of light varies in different media.
Which object use the reflection of light?
How does the light travel?
The bending of light as it passes from one medium to another is called ______.
Match the following:
| Column I | Column II | ||
| 1. | r > 90 | a. | Light gazes at the surface of separation between the two modes. |
| 2. | r = 90 | b. | No refraction. |
| 3. | r < 90 | c. | Refracted ray away from the normal |
When light passes from one transparent medium to another, its direction changes due to:
When light travels from a denser medium to a rarer medium, its speed:
A medium with a higher refractive index is:
