Reflection of Light


 
 
Concept Explanation
 

Reflection of Light

Reflection is defined as the process of turning back of light in the same medium on striking the surface of the object. Almost every thing we see around us is due to the reflection of light falling on the objects. Generally, the objects do not have light of their own they are visible only when the light that comes from different sources like sun, light bulbs, fire etc, fall on the surface and is reflected back.

The process of reflection can be explained using the above experiment:

  • When light falls on a smooth surface, a part of it gets reflected as shown in figure. 
  • The ray AO is incident on the surface at point O and is then reflected. This ray OA is called as incident ray.
  • After reflection at point O the ray travels the path  OB so it is reflected along OB. This ray OB is called as reflected ray.
  • The line ON is the normal to the surface at O. This means, ON is perpendicular to the surface at the point of incidence O and is known as normal.
  • The angle AON that the incident ray makes with the normal is called the angle of incidence, commonly denoted by i.
  • The angle BON that the reflected ray( the ray which get remitted) makes with the normal is called the angle of reflection, commonly denoted by r.
  • Reflection can be of two types:

  • Regular reflection : The light incident on a smooth surface reflected in a single direction is called as regular reflection.
  • Diffuse reflection : When light incident on a rough surface, it reflects in many directions.This is called as diffuse reflection.
  • Sample Questions
    (More Questions for each concept available in Login)
    Question : 1

    Which of the following are correct :

    (a) The light incident on a smooth surface incident in a single direction is called as regular reflection.

    (b) When light incident on a rough surface, it reflects in many directions.This is called as diffuse reflection.

    (c) Refraction is defined as the process of turning back of light in the same medium on striking the surface of the object.

    Right Option : A
    View Explanation
    Explanation
    Question : 2

    The reflection of light occurs when a ray ___________________

    Right Option : B
    View Explanation
    Explanation
    Question : 3

    Which of the following are correct :

    (a) Reflection is defined as the process of turning back of light in the same medium on striking the surface of the object.

    (b) The light incident on a smooth surface incident in a single direction is called as irregular reflection.

    (c) When light incident on a rough surface, it reflects in many directions.This is called as diffuse reflection.

    Right Option : C
    View Explanation
    Explanation
     
    Video Link - Have a look !!!
     
    Language - Hindi/English
     
    Chapters
    Simple Harmonic Motion
    Cytology
    Classifucation Of Plants
    Structural Composition Of Plants
    Nutrition In Plants, Harmones And Plant Disease
    Ecosystem
    Classification In Animals
    Nutrition In Animals
    Human Digestive System
    Human Respiratory System
    Human Skeleton System
    Human Excretory System
    Human Nervous System
    Human Circulatory System
    Human Endocrine System
    Human Reproductive System
    Genetics
    Human Diseases
    States Of Matter
    Metals And Non Metals
    Acid Bases And Salts
    Periodic Classification
    Fuel, Combustion And Flame
    Environmental Chemistry
    Rest And Motion
    Work Power And Energy
    Gravitation
    Pressure And Its Effects
    Sound and Waves
    Heat And Temperature
    Light - Reflection
    Electricity And Magnetism
    Modern Physics
    Force And The Laws Of Motion
    Light - Refraction
    Dispersion And Human Eye
    Magnetic Effect Of Electric Current
    Atom And Molecule
    Pre-Historic Period
    Indus Valley Civilization
    Vedic Civilization
    Religious Reform Movement
    The Early Kingdoms
    The Mauryan Empire
    Post Mauryan Period
    The Age Of The Guptas
    Post Gupta Era
    Age of Rajput
    Khilji Dynasty
    Slave Dynasty
    Tughlaq and Sayyid Dynasty
    Vijaynagar Empire And Bahamani Kingdom
    Mughal Empire And Beyond
    Lodhi Dynasty
    Cholas, Chalukyas and Pallavas
    Arab Invasions
    Bhakti and Sufi Movement
    Rise of Sikhs, Jats and Marathas
    Administrative Structure of Delhi Sultanate
    Architecture During Medivial India
    Advent Of The Europeans
    Post Mughal Period
    Rise of New States in 18th Century
    Growth of British Paramountacy
    Socio Religious Reforms
    Constitutional Development of India
    Indian Struggle Against British Rule
    The Revolt Of 1857
    Education Under British Rule
    Role of Press in Freedom Struggle
    First Phase of National Movement
    Second Phase of National Movement
    Third Phase of National Movement
    Constitutional Development in India
    Constituent Assembly
    Union And Its Territory
    Structure of Indian Constitution
    Fundamental Rights and Duties
    The Union Executive
    The Union Legislature
    Constitutional Amendments and Provisions
    Judiciary In India
    Emergency Provisions
    Center - State Relations
    The State Executive
    The State Legislature
    Election Commission Of India
    Constitutional Organisation
    Non-Constitutional Organisation
    Local Self Goverment
    India - Size And Location
    Geological History Of India
    The Physical Features Of India
    Climate Of India
    Soils In India
    Natural Vegetation
    Windlife Conservation In India
    Drainage System of India
    Irrigation System Of India
    Agriculture In India
    Livestock And Fisheries In India
    Minerals And Energy Resources In India
    Means Of Transport In India
    Major Industries In India
    Tribes of India
    Census of India 2011
    Music
    Dance
    Theatre
    Pantings
    Art, Architecture & Culture of India
    Bio-Diversity
    Earth And Its Structure
    Land Rock And Soil
    Atmosphere, Climate And Weather
    Oceanography
    Human And Regional Geography
    Economic Growth And Development
    Sectors Of Indian Economy
    Economic Planning Of India
    Fiscal And Monetary Policy In India
    Infrastructure In India
    Effects Of British Rule On Indian Economy
    National Income
    Banking System In India
    Poverty And Unemployment
    Inflation And Trade Cycles
    Major Institutions
    Environmental Studies
    Chemistry In Everyday Life
    Units And Dimensions
    Tissues In Organism
    Content / Category
    Class / Course
     
     
    Related Videos
    Language - Hindi/English
    Language - Hindi/English
    Language - Hindi/English

    Language - Hindi/English
    Language - Hindi/English

    Language - Hindi/English
    Language - Hindi/English
    Language - Hindi/English

    Language - Hindi/English
    Language - Hindi/English
    Language - Hindi/English

    Language - Hindi/English


    Students / Parents Reviews [10]