To observe surface waters from a submerged submarine, the optical apparatus utilized is ________?
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Answer: A. Periscope
Explanation
A periscope allows observers inside a submerged submarine to view surface waters. It uses an arrangement of mirrors or prisms inside a long tube. Light enters the top lens and reflects downward to the viewer eyepiece. Submarines operate underwater while needing to scout for surface ships safely. Optical instruments bend and direct light rays using reflection and refraction principles. Naval periscopes are waterproof and built to withstand high pressure environments.
Submarine commanders rely on periscopes for tactical navigation and visual reconnaissance. Military periscopes have evolved to include infrared and digital imaging capabilities. Simple toy periscopes are often built to demonstrate basic optics principles. Telescopes are designed for viewing distant stars and planets in space. Kaleidoscopes create changing symmetrical patterns using colored glass and mirrors. Spectroscopes analyze light wavelengths to determine the chemical composition of substances.
- Subject
- Everyday Science
- Category
- Everyday Science
- Topic
- —
- Difficulty
- medium
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