MCQ
A device containing two plane mirrors which gives us a higher viewer than normal is:
- AStethoscope
- BMicroscope
- ✓Periscope
- DTelescope
✓
Answer
Correct option: C.
Periscope
The periscope is a device which gives us the higher view than normal. By using a periscope, we can see the objects on the other side of a high wall without having to climb over the wall. A soldier sitting in a trench can observe the enemy activities above the ground by using a periscope. Actually, a periscope works on the reflection of light from the two plane mirrors angle two parallel to one another.
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