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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 |
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.
Fill in the blank
A medium through which light cannot pass is called the ....................
Fill in the blank.
Light travels in a ................. path.
Select the correct alternative.
The luminous body is
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
A ______ is an artificial source of light.
Light is a form of ______.
In going from a rarer to denser medium, the ray of light bends ______.
The mirror used in search light is ______.
Match the following.
| 1. | Ratio of height of image to height of object. | Concave mirror |
| 2. | Used in hairpin bends in mountains. | Total internal reflection |
| 3. | Coin inside water appearing slightly raised. | Magnification |
| 4. | Mirage | Convex mirror |
| 5. | Used as Dentist’s mirror. | Refraction |
