Which of the following works on the concept of multiple reflections?

Options

A. Telescope
B. Periscope
C. Binoculars
D. Kaleidoscope

Answer

To determine which device works on the concept of multiple reflections, we can analyze the options provided in the question. Let's go through the reasoning step by step.

### Step-by-Step Solution:

1. **Understanding the Concept of Multiple Reflections**:
- Multiple reflections occur when light bounces off surfaces (like mirrors) more than once before reaching the observer's eye. This is different from refraction, where light bends as it passes through different mediums.

2. **Analyzing the Devices**:
- **Telescope**: A telescope uses lenses to refract light. Although there may be some reflection involved, the primary function is based on refraction. Therefore, it does not primarily work on the concept of multiple reflections.

- **Binoculars**: Similar to telescopes, binoculars also use lenses to refract light. They may have prisms that reflect light, but again, the main principle is refraction, not multiple reflections.

- **Kaleidoscope**: A kaleidoscope consists of multiple mirrors arranged at angles to create a series of reflections. When light enters, it reflects off the mirrors multiple times, creating symmetrical patterns. This is a clear example of multiple reflections at work.

3. **Conclusion**:
- Among the devices discussed, the **kaleidoscope** is the one that works on the concept of multiple reflections. The mirrors inside the kaleidoscope reflect light multiple times, producing various symmetrical images.

### Final Answer:
The device that works on the concept of multiple reflections is the **kaleidoscope**.

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