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प्रश्न
The source of ultraviolet light is ______.
विकल्प
Electric bulb
Red hot iron ball
Sodium vapour lamp
Carbon arc-lamp
उत्तर
The source of ultraviolet light is carbon arc-lamp.
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संबंधित प्रश्न
Give two properties of ultraviolet radiations which differ from the visible light.
Give reason for the following:
A quartz prism is required for obtaining the spectrum of ultraviolet light.
Give reason for the following:
Ultraviolet bulbs have a quartz envelope instead of glass.
Name the radiation which can be detected by a solution of silver chloride.
Name the material prism required for obtaining the spectrum of ultraviolet light.
State one harmful effect of the ultraviolet radiation.
What effect do the ultra-violet radiations have on the human body?
Name the invisible radiations which are studied using the quartz prism.
State one use of ultraviolet radiations.
