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Science / Reflection and Refraction of Light

Science / Reflection and Refraction of Light

The branch of physics dealing with the properties and behaviour of light is called optics. Light is a form of energy which helps us to see the objects.

Have you ever wondered why we are able to see different objects around us and their images in a mirror or in a pond? This is simply due to reflection of light. It is the phenomenon of bouncing back of light after striking a smooth polished surface.

Why is the word "ambulance" written backwards in an ambulance car? This is due to lateral inversion - The phenomenon due to which the left side of an object appears to be its right side in its image from a reflecting medium (mirror) and vice-versa. Understand the properties of spherical mirrors (concave and convex) and plane mirror.

When light travels obliquely from one transparent medium into another it gets bent. This bending of light is called refraction of light. A straw inserted in a glass of water appears to break at the surface of the water due to refraction of light. As light passes from air to water, its speed slows down and the light rays are bent.

Speed of light is different in different optical mediums. Refractive Index is a characteristic property of a medium. The refracting ability of a medium is measured by its refractive index. Those with higher values of refractive index are optically denser than those with lower values of refractive index. e.g. water is optically denser than air but optically rarer than glass.

Learn about lenses - concave and convex and their image formation.
Mirror formula - \frac{1}{v} + \frac{1}{u} = \frac{1}{f}
Lens formula - \frac{1}{v} - \frac{1}{u} = \frac{1}{f}

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Exercises
Lessons
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  • Light - SmartTest

    Light

    • Accessed by: 398 Students
    • Average Time: 00:04:39
    • Average Score: 48.27
    • Questions: 73
    • Introduction to Light Reflection And Refraction
    • Reflection Of Light
    • Spherical Mirrors
    • Refraction Of Light
    • Rules for obtaining images formed by spherical mirrors
    • Image formation by concave mirror
    • Image formation by convex mirror
    • Uses of spherical mirrors
    • Mirror formula and Magnifictaion
    • Refractive index
    • Refraction through a glass slab
    • Spherical lenses
    • Rules for obtaining images formed by spherical lenses
    • Image formation by concave lens
    • Image formation by convex lens
    • Lens formula and magnification
    • Power of a lens
  • Spherical Mirrrors

    Learnhive Lesson on Spherical Mirrrors

    Refractive Index

    Learnhive Lesson on Refractive Index

    Refraction of Light through a Glass Slab

    Learnhive Lesson on Refraction of Light through a Glass Slab

    Refraction of Light

    Learnhive Lesson on Refraction of Light

    Reflection of Light

    Learnhive Lesson on Reflection of Light

    Power of a Lens

    Learnhive Lesson on Power of a Lens

    Laws of Refraction

    Learnhive Lesson on Laws of Refraction

    Image formation by Convex Mirror

    Learnhive Lesson on Image formation by Convex Mirror

    Image formation by Concave Mirror

    Learnhive Lesson on Image formation by Concave Mirror

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