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प्रश्न
What do we call a substance through which light passes? Give an example of such a substance.
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उत्तर
A substance through which light passes is called a transparent substance.
Examples: glass, air, water, etc.
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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 |
Write true or false of the following statement.
The moon is a natural source of light.
Match the following columns
| Column A | Column B |
| a. Wooden block | i. new moon's day |
| b. Sun | ii. rectilinear propagation of light |
| c. Umbra | iii. opaque body |
| d. Eclipse | iv. luminous body |
| e. Solar eclipse | v. complete dark park |
List two artificial sources of light.
Name any four man made sources of light.
Why do objects in a room become visible even if sunlight does not enter it?
Write true or false
The moon has its own light.
A ______ is a natural source of light.
_______ is the natural source that stimulates sight and makes things visible.
If VB, VG, VR be the velocity of blue, green, and red light respectively in a glass prism, then which of the following statement gives the correct relation?
