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Sudheer M.
's Polls
GK
For seeing objects at the surface of water from a submarine under water, the instrument used is
kaleidoscope
0 votes (0%)
kaleidoscope
periscope
0 votes (0%)
periscope
spectroscope
0 votes (0%)
spectroscope
telescope
1 vote (100%)
telescope
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Wolmal
(256 symbols max)
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