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प्रश्न
How does light make an object visible?
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उत्तर
An object becomes visible to us when the light after striking the object reaches our eyes. Light itself is not visible, but the light makes objects visible to us.
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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 self-luminous.
Fill in the blank.
Light gives us the sensation of ................
Name two natural sources of light.
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A glass strip, an ordinary paper, greased paper, tracing paper, polythene sheet, wooden piece, steel plate, glycerine, kerosene oil, mustard oil, grounded glass, stone, book, water, and milk.
Opaque Transparent Translucent
Match the following
| Column A | Column B |
| 1. Transparent object | i. Football |
| 2. Eclipses | ii. Glass |
| 3. Translucent object | iii. Fluorescent tube |
| 4. Luminous object | iv. Tracing paper |
| 5. Non - luminous object | v. Shadows |
Answer the following.
Write down five man-made sources of light.
Answer the following.
List two transparent objects.
When a beam of white light passes through a prism it gets ______.
Why are traffic signals red in colour?
