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प्रश्न
Name two natural sources of light.
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उत्तर
- Sun
- Stars
- Firefly
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संबंधित प्रश्न
Fill in the blank.
The sun is a ............... source of light.
Fill in the blank.
A medium which allows light to pass through it easily is called the ...................
Why do objects in a room become visible even if sunlight does not enter it?
Fill in the blank
The brightness of light is measured in ...................
Write true or false
The stars have no light.
Write whether of the following objects are luminous or non-luminous.
| Object | Luminous/Non-luminous |
| A book | |
| A burning candle | |
| A wax cloth | |
| A pencil | |
| A pen | |
| A light bulb | |
| A tyre | |
| A torch |
Write about two everyday situations that tell you that light travels in a straight line.
Boojho and Paheli were given one mirror each by their teacher. Boojho found his image to be erect and of the same size whereas Paheli found her image erect and smaller in size. This means that the mirrors of Boojho and Paheli are, respectively
State whether the following statement is True or False.
An object can be seen only if it emits light
Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the shirts in the image?
