Multiple reflection of light
Explanation
The fundamental principle involved is the reflection of light. When light interacts with smooth, polished surfaces like mirrors, it bounces back. If multiple mirrors are arranged specifically, light rays undergo reflection more than once, creating images of images.
Detailed Analysis:
- Refraction of light is Incorrect: Refraction refers to the bending of light as it passes from one transparent medium to another (e.g., from air to glass or water). Mirrors function based on reflection, not the transmission and bending of light through a medium.
- Multiple reflection of light is Correct: When a hairdresser holds a mirror behind a customer, light from the back of the customer's head reflects off this rear mirror. This reflected light then travels to the large mirror in front of the customer, reflects again, and finally reaches the customer's eyes. This phenomenon, where light bounces off more than one surface sequentially to form an image, is known as multiple reflection.
- Total internal reflection is Incorrect: Total Internal Reflection (TIR) is a phenomenon occurring when light travels from a denser medium to a rarer medium at an angle exceeding the critical angle (e.g., in optical fibers or diamonds). It is not the principle used in plane mirrors.
- Dispersion of light is Incorrect: Dispersion is the splitting of white light into its constituent colors (spectrum), as seen in a prism or a rainbow. It is unrelated to the formation of images by plane mirrors.
Key Takeaway:
Multiple reflection enables the viewing of objects not in the direct line of sight by reflecting an image from one mirror surface onto another.