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प्रश्न
Fill in the blank
The brightness of light is measured in ...................
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उत्तर
The brightness of light is measured in candle power.
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संबंधित प्रश्न
How do we see objects around us ?
Fill in the blank.
A medium which allows light to pass through it easily is called the ...................
Is the moon a luminous object?
What do we call a substance through which light passes? Give an example of such a substance.
Name any four man made 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 |
A ______ is a natural source of light.
Write about two everyday situations that tell you that light travels in a straight line.
Boojho made light from a laser torch fall on a prism. Will he be able to observe a band of seven colours? Explain with a reason.
