The apparatus used in submarines to give clear view of the objects on the surfaceof the ocean or ground is known as_________ .a) Periscope
b) sectant
c) stereoscope
d) telescope
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The apparatus used in submarines to give clear view of the objects on the surfaceof the ocean or ground is known as "Periscope".
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The apparatus used in submarines to give clear view of the objects on the surfaceof the ocean or ground is known as Periscope.
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