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प्रश्न
What do you understand by candle power?
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उत्तर
To measure the brightness of light in comparison with the brightness of a candle. The unit of candle power is used.
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संबंधित प्रश्न
Select the correct alternative.
The luminous body is
What do we call a substance through which we cannot see light? Give an example of such a substance.
What do we call a substance through which light passes? Give an example of such a substance.
Fill in the blank
A ............. is formed when the path of light is obstructed by an ..............
Write true or false
The earth has its own light.
Answer the following.
Differentiate between luminous and non-Luminous objects.
When light passes through a prism, it gets separated into ______ colours.
Light travels only in a______ It is because of this property that______ are formed.
Light is a form of ______.
Light is a form of energy and it travels in a straight line.
