The yellow colour has a greater luminous efficiency as compared to the other colours. Can we increase the illuminating power of a white light source by putting a yellow plastic paper around this source?
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Answer:
yes we can do so by doing so
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The illuminating power of a white light source by putting a yellow plastic paper around this source cannot be increased.
Explanation:
The source lighting cannot be increased by wrapping it in yellow plastic.
A wide range of visible radiation is emitted from a white light source.
Yellow plastic blocks all wavelengths and emits only yellow wavelengths of light.
This means that a small part of the power is emitted by a beam of white light.
As a result, the source lighting dims when wrapped in yellow plastic.
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