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प्रश्न
Name any four man made sources of light.
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उत्तर
1. An electric bulb
2. Candle
3. An oil lamp
4. A torch
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संबंधित प्रश्न
Name two natural sources of 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
Write the names of some cold light-emitting objects.
Tick the correct answer.
Substance which don’t allow light to pass through them,
Fill in the blank
The brightness of light is measured in ...................
Answer the following.
List four natural sources of light.
When a ______ object comes in the way of light, light passes ______ it.
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 |
Describe the pictures.
State whether the following statement is True or False.
An object can be seen only if it emits light
