Two plane mirrors M1 and M2 each have length 1 m are separated by 1 cm. A ray of light is inci

step 1 In this question we have two parallel plane mirror. This is the mirror M1 and this is M2. A ligh

Two plane mirrors M1 and M2 each have length 1 m are...

Two plane mirrors $M_{1}$ and $M_{2}$ each have length $1 \mathrm{~m}$ are separated by $1 \mathrm{~cm}$. A ray of light is incident on one end of mirror $M_{1}$ at angle $45^{\circ} .$ How many reflections the ray will have before going at from the other end? (a) 50 (b) 51 (c) 100 (d) 101

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Law of Reflection

The law of reflection states that when a light ray strikes a surface, the angle of incidence is equal to the angle of reflection. This fundamental principle allows one to predict the behavior of light upon striking reflective surfaces such as mirrors, and is pivotal in analyzing multi-reflection systems.

Plane Mirrors

Plane mirrors reflect light in a predictable manner, creating images by maintaining the equality of the incident and reflected angles. Their flat geometry makes them a common subject in optical setups and theoretical problems involving multiple reflections.

Unfolding Technique (Method of Images)

The unfolding technique is a method used to analyze multiple reflections by effectively transforming the path of a ray of light through reflected images of the mirrors. By 'unfolding' the system, the complex path of the reflected ray can be converted into a straight-line problem, simplifying the calculation of the number of reflections.

Optical Ray Tracing

Optical ray tracing is the process of following the path of a light ray through a system that includes reflections and refractions. This technique is essential for understanding and predicting the behavior of light in various configurations, particularly in systems involving multiple reflective surfaces.

Please give Ace some feedback