Showing posts with label For seeing objects at the surface of water from a submarine under water. Show all posts

Showing posts with label For seeing objects at the surface of water from a submarine under water. Show all posts

Tuesday, 8 December 2015

For seeing objects at the surface of water from a submarine under water, the instrument used is

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166. For seeing objects at the surface of water from a submarine under water, the instrument used is

A.  Kaleidoscope
B.  Periscope
C.  spectroscope
D.  telescope

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