Question
Easy
X is a device which is used to see around corners and is based on the principle of Y. X and Y respectively are :
1
Telescope, reflection
2
Kaleidoscope, refraction
3
Periscope, reflection
4
Periscope, dispersion
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: Light
Topic: Reflection
Correct Answer
Option C
Explanation
Option 3 is the correct answer: "Periscope, reflection." 1. Explanation for Option 3: - A periscope is a device that allows one to see over or around obstacles, such as corners or walls. It is commonly used in submarines, tanks, and by soldiers in trenches. The periscope operates on the principle of reflection. - The periscope consists of two mirrors placed at 45-degree angles at each end of a tube.тАжRead More
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