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प्रश्न
Write true or false
Opaque objects do not allow light to pass through them.
विकल्प
True
False
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उत्तर
True
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संबंधित प्रश्न
Write true or false of the following statement.
We can see an object through an opaque medium.
Select the correct alternative.
The natural source of light is
Explain the difference between a transparent, a translucent, and an opaque medium. Give two examples of each.
Name any four man made 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
Answer the following.
What is meant by luminous intensity? What is one lumen?
Answer the following.
List two transparent objects.
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 |
Light is a form of ______.
A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is ______.
