Question

Q. Device which helps us to
see objects which are not in
direct line of sight *
a) Stethoscope
b) Periscope
c) Epidiascope
d) Microscope​

Answer 1

Answer:

epidiascope

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Answer 2

Answer:

Dear friend,

The answer is (b) Periscope.

Objects that are not in direct line of sight can be viewed by optical instruments named 'Periscopes'. Periscopes help a lot for navigation under water and are of great

help to submariners.

Hope this helps.

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