Question

The principle of successive reflections of light at inclined mirrors are used in

• A. periscope
• B. telescope
• C. microscope
• D. kaleidoscope

Answer 1

The correct option is D

kaleidoscope

Explanation of correct option -D

1. A kaleidoscope is an optical apparatus containing two or more reflecting surfaces slanted at an angle to one other so that when viewed from the opposite end, one or more objects on one end of the mirrors appear as a regular symmetrical pattern due to repeated reflection.
2. The notion of multiple reflections is used in a kaleidoscope.
3. Three rectangular mirrors are often arranged at a 60-degree angle to make an equilateral triangle.

Explanation of incorrect options

A- Periscope works on the principle of reflection.

B- Curved mirrors gather and focus light from the night sky in most telescopes.

C- When a material is placed within the focus of a basic microscope, a virtual, erect, and enlarged image is obtained at the shortest possible distance of distinct vision from the eye.

So, the correct answer is D- kaleidoscope