Answer:
Light can be reflected, transmitted, or absorbed. You have read that EM waves can interact with a material medium in the same ways that mechanical waves do.
Explanation:
Answer:
valency of an element is a combining power of an element.
for example oxygen has six valance electron but its valency is 2.
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Hello There!
The frequency is 91.74 MHz.
It is UltraViolet Radiation.
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