Which of the following is employed to clearly view objects which cannot be seen directly due to obstruction?

A laser

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A periscope

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A kaleidoscope

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A sting ray

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Solution

The correct option is B A periscope
A periscope is device with arrangement of two plane mirror such that we can see above the obstruction.

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Which of the following is employed to clearly view objects which cannot be seen directly due to obstruction?

The correct option is B A periscopeA periscope is device with arrangement of two plane mirror such that we can see above the obstruction.

The correct option is B A periscope
A periscope is device with arrangement of two plane mirror such that we can see above the obstruction.