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प्रश्न
Why are traffic signals red in colour?
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उत्तर
- The wavelength of red colour is more than other colours.
- Red colour will travel long distance without scattering.
- Red colour gets least scattered and reaches people.
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संबंधित प्रश्न
Write true or false of the following statement.
The moon is a natural source of light.
What is light? Define it.
Tick the correct answer
Glass is
Answer the following.
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Answer the following.
Differentiate between luminous and non-Luminous objects.
Light travels only in a______ It is because of this property that______ are formed.
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Match the following.
| 1. | Ratio of height of image to height of object. | Concave mirror |
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