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hardik

· started a discussion

· 1 Months ago

telephone (Question: 187725.0 )

we can talk to any body else on telephone. but not on other

Question:
DIRECTIONS: Find the odd pair from the given alternatives.
Options:
A) Dictaphone
B) Microphone
C) Gramophone
D) Telephone
Solution:
Ans: (a) Except option (A) all others are related to sound.


Dictaphone is a machine for recording and playing back dictated letters.

Gramophone is a sound recording and playing back round machine.

microphone is an instrument for converting sound waves in to electrical variations that can be reconverted in to sound after transmission by wire or radio or after recording. 

Telephone is an apparatus for transmitting sound.  

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