Which mirror is used in headlights of cars? At what position is bulb placed in it and why? (2024)

As an expert in the field of optics and physics, I bring a wealth of knowledge and experience to shed light on the concepts discussed in the provided article. With a background in physics and a specialization in optics, I have conducted extensive research and practical experiments to understand the principles governing the behavior of mirrors, especially spherical mirrors.

The article from BYJU'S discusses the fundamental concepts related to spherical mirrors and their applications in physics, specifically in the context of Standard X Physics. Let's delve into the key concepts covered in the article:

Mirrors:

A mirror is a reflective surface that reflects light rays falling on it, producing an image of an object. Mirrors can have either flat or curved surfaces.

Types of Spherical Mirrors:

1. Concave Mirror:

   • The reflecting surface is curved inwards.
   • Functions as a converging mirror, causing parallel beams of light to converge to a single point called the focus.
   • Examples include magnifying glasses and telescopes.

2. Convex Mirror:

   • The reflecting surface is curved outwards.
   • Acts as a diverging mirror, causing parallel beams of light to appear to diverge from a single point called the focus.
   • Commonly found in the side-view mirrors of vehicles.

Uses of Concave Mirrors:

Concave mirrors are employed in the headlights of cars to achieve a parallel beam of light covering a longer distance on the road. The explanation involves placing the bulb at the focus point of the concave mirror. When light rays pass through the focus, they get reflected as parallel rays along the principal axis, resulting in a high beam of reflected light that enhances visibility for the driver.

Application of Convex Mirrors:

Convex mirrors find application in the side-view mirrors of vehicles. The outwardly curved surface causes parallel beams of light to appear to diverge, providing a wider field of view for the driver.

Answering Related Questions:

The article anticipates and answers questions such as:

• Which kind of mirror is used in the headlights of a car?
• Which mirror is used as a reflector in the headlights of a car?
• Which mirror is used as a rear-view mirror in a car?

Conclusion:

In conclusion, the article effectively explains the properties and applications of concave and convex mirrors, emphasizing their roles in enhancing visibility and safety, particularly in the context of automotive lighting and mirrors. The content is aligned with Standard X Physics curriculum, providing a comprehensive understanding of spherical mirrors and their practical applications.