Constructing and Understanding Periscopes

The video tutorial explains how obstacles can block direct sight and introduces the periscope as a solution. It provides a detailed guide on constructing a periscope using simple materials like a box and mirrors. Finally, it demonstrates how to use the periscope to see objects that are otherwise obstructed.

What is the primary function of a periscope?

• To capture images

• To measure distances

• To observe objects over obstacles

• To magnify distant objects

Which material is NOT required to make a periscope?

• Plastic sheet

• Incense box

• Glue

• Mirror strips

What is the first step in constructing a periscope?

• Cutting windows on the box

• Drawing square shapes on the box ends

• Fixing mirrors inside the box

• Applying glue to the box

How should the mirrors be positioned inside the periscope?

• At a 90-degree angle

• At a 45-degree angle

• Parallel to each other

• Facing each other

What can be used as an alternative to glue for fixing mirrors?

• Tape

• Staples

• Molten wax

• Nails

Where should the windows be cut on the periscope box?

• On the narrow side near the mirrors

• On the top side

• On the wide side

• On the bottom side

What is the purpose of the windows in a periscope?

• To let light in

• To allow viewing through the mirrors

• To provide ventilation

• To balance the periscope

What is the main advantage of using a periscope?

• It is portable

• It allows viewing over obstacles

• It is inexpensive

• It magnifies objects