Question

Which one of the following activities is possible without electromagnetic radiation?
a) Reading a book.
b) Speaking with a friend.
c) Satellite communication.
d) The depletion layer size decreased.

Answer 1

Answer:

the answer is : (b) speaking with a friend...

Explanation:

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Answer 2

$\tt{\orange{ Reading \: a \: book.}}$

Its definition is kind of radiation including visible light, radio waves, gamma rays, and X-rays, in which electric and magnetic fields vary simultaneously. So that's why reading of book is the answer