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प्रश्न
Explain the difference between a transparent, a translucent, and an opaque medium. Give two examples of each.
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उत्तर
1. Transparent objects: Those objects through which light can pass easily are called transparent objects. e.g. Water, glass, air.
2. Translucent object: The object through which light can pass partially are called translucent object, e.g. tracing paper, waxed paper.
3. Opaque object: The objects which do not allow the light to pass through are called opaque objects, e.g. wood.
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संबंधित प्रश्न
Match the following
| (a). A light ray passes from air to glass | (1) . speeds up |
| (b). A light ray passes from glass to water | (2). reflects red light |
| (c). Virtual image | (3). primary colours |
| (d). Red rose | (4). plane mirror |
| (e). Red, green, and blue | (5). slows down |
Fill in the blank.
The sun is a ............... source of light.
List two artificial sources of light.
Write the names of some transparent objects.
What do you understand by candle power?
Tick the correct answer.
Substance which don’t allow light to pass through them,
Write true or false
The stars have no light.
Answer the following.
What is meant by luminous intensity? What is one lumen?
When a ______ object comes in the way of light, light passes ______ it.
Write about two everyday situations that tell you that light travels in a straight line.
