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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 |
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उत्तर
| (a). A light ray passes from air to glass | (5). slows down |
| (b). A light ray passes from glass to water | (1) . speeds up |
| (c). Virtual image | (4). plane mirror |
| (d). Red rose | (2). reflects red light |
| (e). Red, green, and blue | (3). primary colours |
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संबंधित प्रश्न
Write true or false of the following statement.
A shadow is formed because light travels in a straight-line path.
Why do objects in a room become visible even if sunlight does not enter it?
Does the flame of a gas stove emit light?
From among the following objects, list out the opaque, translucent, and transparent bodies in the space provided below:
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
The sun and ______ are the natural sources of light.
Fill in the blank
Light consists of .............. colours.
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.
Mirrors change the direction of light that fall on them.
Choose the translucent substance from the following
