Question

Draw a diagram to show the working of a periscope.

Answer 1

Answer:

The Explained Diagram Of Periscope

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Answer 2

Answer:

(b) Advantages of periscope:

1. It can be used to see above the heads of crowd.

2. It can be used by soldiers in trench warfare.

Disadvantages of periscope :

1. Final image is not brightly illuminated as some amount of light energy is absorbed by two successive reflections.

2.  Any deposition of dust or moisture on mirror, reduces regular reflection almost to nil and hence, it stops working.