Periscope is used toa)view objects placed at a higher level from a pos...
Understanding Periscopes
Periscopes are fascinating optical devices primarily used to observe objects that are not in the direct line of sight. Here’s a detailed look at their functionality and purpose.
How Periscopes Work
- A periscope consists of a long tube with two mirrors positioned at 45-degree angles at each end.
- Light from an object above the observer's level enters the top mirror, reflects off the bottom mirror, and then travels down the tube to the observer's eye.
Application of Periscopes
- Viewing from Below: Periscopes are especially useful in situations where the observer is at a lower level. For example, submarines use periscopes to see above water while remaining submerged.
- Military Use: They are also utilized in military tanks to allow soldiers to see outside without exposing themselves to danger.
Why Option A is Correct
- The correct answer, "view objects placed at a higher level from a position at lower level," accurately describes the primary function of a periscope.
- The other options listed (b, c, d) refer to different optical instruments or functions that do not align with the basic purpose of a periscope.
In Conclusion
Periscopes are essential tools that enable individuals to observe high-level objects safely and efficiently, making them invaluable in various fields, including military operations and underwater exploration.
Periscope is used toa)view objects placed at a higher level from a pos...
C)observe the distant images such as planet and stars.