Question

Which instrument is used in submarine to see the objects above sea level ?

Pykometer
Polygraph
Photometer
Periscope​

Answer 1

$\huge{Hey mate..!!}$

Periscope is used in submarine to see the objects above sea level...

Answer 2

Answer :-

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Q :- Which instrument is used in submarine to see the objects above sea level ?


A :- D. Periscope.

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Thanks!