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Question
Astronauts in space need not necessarily have any electronic device with them to communicate.
Astronauts in space need not necessarily have any electronic device with them to communicate.
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Solution
The correct option is B False
Air is absent in the space. They must need some sort of electronic device which converts sound to an electrical signal at speaker side and electrical signal to sound at receiver end for sound propagation.
False
Air is absent in the space. They must need some sort of electronic device which converts sound to an electrical signal at speaker side and electrical signal to sound at receiver end for sound propagation.
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