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      • X Chemical Reaction and Equation
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      • X Electricity
      • X Magnetic Effects of Currents
      • X Source Of Energy
      • X Biology Term-1
        • 10th Life Process
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      • Carbon and Its Compounds
      • Periodic Classification of Elements
      • Light - Reflection and Refraction
      • The Human Eye and the Colourful World
      • X Biology Term-II
        • How Do Organisms Reproduce ?
        • Heredity and Evolution
        • Our Environment
        • Management of Natural Resource
    • 10th Maths Term I
      • X Real Numbers
      • X Polynomials
      • X Linear Equations in Two Variables
      • X Similar Triangles
      • X Trigonometry and Identities
      • X Statics(Mean,median and Mode)
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      • 10th Arithmetic Progressions
      • 10th Co-Ordinate Geometry
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      • IX Motion and Rest
      • IX Force and Laws of motions
      • IX Gravitation
      • IX Matter in our surrounding
      • IX Is Matter around Us Pure
      • IX Biology Term-1
        • Cell structure n function class9
        • Tissue class9
        • Improvement in food resources class9
    • 9th Science term II
      • Atoms and Molecules
      • Structure of the Atom
      • Thrust and Pressure
      • Work and Energy
      • Sound
      • IX Biology Term-2
        • Diversity in Living Organisms
        • Natural Resources
        • Why Do We Fall ill ?
    • 9th Maths term I
      • IX Number system
      • IX Polynomials
      • IX Introduction to Euclid Geometry
      • IX Lines and Angles
      • IX Triangles
      • IX Coordinate geometry
      • IX Area of triangles by Heron's formula
    • 9th Maths term II
      • Linear equations in two variables
      • Quadrilaterals
      • Area of Parallelogram and Triangle
      • Circle
      • Surface Areas and Volumes
      • Constructions
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        • Some Natural Phenomenon
        • Stars and the Solar System
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        • Synthetic fibre and Plastics
        • Metals and Non-Metals
        • Combustion ,Flame and Fuel
        • Coal Petroleum, Natural Gases
        • Air and Water Pollution
      • Class 8 Biology
        • Crop Production and Management
        • Microorganisms friend and foe
        • Cell structure and functions
        • Reproduction in animals
        • Reaching the Age of Adolescence
        • Conservation of plants and animals
    • Class 8 Mathematics
      • Algebra
        • Rational Number
        • Square and Square Roots
        • Algebraic Expression
        • Factorization
        • Exponent and Power
        • Linear Equations
      • Commercial math
        • Unitary Methods
        • Percentage
        • Profit and Loss
        • Discounts & Sales Tax
        • Compound Interest
      • Geometry/Mensuration
        • Quadrilateral
        • Practical Geometry
        • Perimeter and Area
        • Data Handling
        • Introduction of Graphs
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Class 10 Chapter Reflection and Refraction:  
The first theory of light was put forward by Newton. This theory treats light as a particle called corpuscle. We can say that light propagates as a wave and is emitted and absorbed as a particle. One may regard light as having dual nature. 
class 10 Reflection and refraction study Notes
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10th Light -Notes-Topic Plane and Spherical mirror
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Proof_Mirror and Lense Formula and Glass Slab
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Class 10 Refraction and Refraction NCERT Solution
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Light Refraction and Refraction solved questions-1
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Light Refraction and Refraction solved questions-2
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Light Refraction and Refraction solved questions-4
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Light Refraction and Refraction solved questions-5
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Numerical question ​Based on Chapter Light
10th Light Numerical Question Test Paper-1
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10th Light Numerical Question Test Paper-2
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10th Light Numerical Question Test Paper-3
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10th Light Numerical Question Test Paper-4
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Light Reflection and refraction explanatory notes -1
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Light Reflection and refraction explanatory notes -2
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Picture
Solved Questions from Board Exam CBSE _NCERT Class 10 Chapter Reflection and Refraction

Q. For the same angle of incidence 45 degree, the angle of refraction in two transparent media 1 and 2 is 20 degree and 30 degree respectively. out of 1and 2 which is optically denser medium and why ?

Ans: As the angle of refraction is less for medium 1, So medium 1 will be optically denser medium than medium 2.

Q. For the same angle of incidence in media p , q , r the angles of refraction are 45 , 35 and 15 degrees respectively. In which medium will the velocity of light be minimum?

Ans: Taking the refractive index of the medium as sin i / sin r, the refractive index of medium is the maximum and the refractive index of medium 'p ' is the least. In other words, out of the three media,,the rarest medium. Therefore, as light travels fastest in rarer media, the velocity of light will be aximum in and minimum in 'r '.

Q.For what angle of incidence, the lateral shift produced by parallel sided glass plate is zero?
Ans: For <i = 0.
Q. What are the factors on which the lateral shift depends?
Ans: Thickness of the refracting medium, angle of incidence and its refractive index


Q. A coin in a glass beaker appears to rise as the beaker is slowly filled with water. Why? 
Ans: It happens on account of refraction of light. A ray of light starting from the coin goes from water  to air and bends away from normal. Therefore, bottom of the beaker on which the coin lies appears to  be raised.

Q. An object under water appears to be at lesser depth than in reality. Explain why?
Ans: This is due to refraction of light. We know 
Real depth / Apparent depth = n         Or Apparent depth = Real depth / n                 

Since n > 1, so apparent depth < real depth

Q.Why does bending of light takes place ?
Ans: The bending of light takes place because it travels with different velocity in different media

Q.Does the refractive index of substance change with the colour of light ?
Ans: Yes, refractive index depends upon the colour of light (wavelength)

Q.What is the advantage of "total internal reflection" over reflection ?
Ans: The loss of intensity of light is less in total internal reflection than reflection

Q.In refraction of light through a rectangular glass slab, the emergent ray is parallel to the  direction of the incident ray. Why 
Ans: This is because glass slab has parallel reflecting surfaces

The incident ray bends towards the normal inside the glass slab and the refracted ray bends away from the normal when it emerges from the glass slab. The extent of bending of the light ray at the two opposite parallel surfaces is equal and opposite. Hence the incident ray and the emergent ray are parallel to each other.

Q.Under what condition in an arrangement of two plane mirrors, incident ray and reflected ray will always be parallel to each other, whatever may be angle of incidence. Show the same with the help of diagram.
Ans. Incident ray and reflected ray will always be parallel to each other if two plane mirrors are placed perpendicular to each other as shown in figure

                           10th Science SA-2 Chapter wise Test Papers Links

1. Carbon and Its Compounds                    

6. The Human Eye and the Colorful World

2. Periodic Classification of Elements

7. Our Environment                                   

3. How Do Organisms Reproduce?            

8. Management of Natural Resource

4. Heredity and Evolution

9. Science  Sample papers                            

5. Light - Reflection and Refraction          

10. X Science NCERT SOLUTIONS

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  • HOME
    • STUDY ZONE
    • Study Material
    • Think Zone
    • Board Papers Solutions
    • CBSE Board Date Sheet
    • Syllabus for Class I to XII
  • CLASS 10
    • 10th Science Term-I
      • X Chemical Reaction and Equation
      • X Acid Base and Salt
      • X Metals and Non Metals
      • X Electricity
      • X Magnetic Effects of Currents
      • X Source Of Energy
      • X Biology Term-1
        • 10th Life Process
        • 10th Control and coordination
    • 10th science Term II
      • Carbon and Its Compounds
      • Periodic Classification of Elements
      • Light - Reflection and Refraction
      • The Human Eye and the Colourful World
      • X Biology Term-II
        • How Do Organisms Reproduce ?
        • Heredity and Evolution
        • Our Environment
        • Management of Natural Resource
    • 10th Maths Term I
      • X Real Numbers
      • X Polynomials
      • X Linear Equations in Two Variables
      • X Similar Triangles
      • X Trigonometry and Identities
      • X Statics(Mean,median and Mode)
    • 10th Maths Term II
      • 10th Quadratic Equations
      • 10th Arithmetic Progressions
      • 10th Co-Ordinate Geometry
      • 10th Height and Distance
      • 10th Circles
      • 10th Area Related to Circles
      • 10th Surface Areas and Volumes
      • 10th Probability
      • 10th Constructions
    • 10th Social Science
      • 10th History and Geography
      • 10th Civics and Economics
    • 10th CBSE English
    • 10th Solved Assignments
  • CLASS 9
    • 9th Science term I
      • IX Motion and Rest
      • IX Force and Laws of motions
      • IX Gravitation
      • IX Matter in our surrounding
      • IX Is Matter around Us Pure
      • IX Biology Term-1
        • Cell structure n function class9
        • Tissue class9
        • Improvement in food resources class9
    • 9th Science term II
      • Atoms and Molecules
      • Structure of the Atom
      • Thrust and Pressure
      • Work and Energy
      • Sound
      • IX Biology Term-2
        • Diversity in Living Organisms
        • Natural Resources
        • Why Do We Fall ill ?
    • 9th Maths term I
      • IX Number system
      • IX Polynomials
      • IX Introduction to Euclid Geometry
      • IX Lines and Angles
      • IX Triangles
      • IX Coordinate geometry
      • IX Area of triangles by Heron's formula
    • 9th Maths term II
      • Linear equations in two variables
      • Quadrilaterals
      • Area of Parallelogram and Triangle
      • Circle
      • Surface Areas and Volumes
      • Constructions
      • Statistics
      • Probability
    • IX Social Science
      • 9th Social Science Term-1
      • 9th Social Science Term-2
    • IX English and Hindi
    • CBSE ASL Corner
  • IX Sample Papers
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      • Mathematics
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      • English Hindi Sanskrit
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  • X Sample Papers
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      • 10th Sample Paper 2018-19
    • X Sample Paper SA-I
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      • 10th English sa-1 paper
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    • X Sample Paper SA-II
      • Mathematics
      • Science
      • Science Practicals MCQ
      • Social Science
      • Hindi English and Sanskrit
  • CLASS 8
    • 8th Science
      • Class 8 Physics
        • Force Pressure and Frictions
        • Sound
        • Chemical Effects of Electric Current
        • Refraction of Light and Our Eyes
        • Some Natural Phenomenon
        • Stars and the Solar System
      • Class 8 Chemistry
        • Synthetic fibre and Plastics
        • Metals and Non-Metals
        • Combustion ,Flame and Fuel
        • Coal Petroleum, Natural Gases
        • Air and Water Pollution
      • Class 8 Biology
        • Crop Production and Management
        • Microorganisms friend and foe
        • Cell structure and functions
        • Reproduction in animals
        • Reaching the Age of Adolescence
        • Conservation of plants and animals
    • Class 8 Mathematics
      • Algebra
        • Rational Number
        • Square and Square Roots
        • Algebraic Expression
        • Factorization
        • Exponent and Power
        • Linear Equations
      • Commercial math
        • Unitary Methods
        • Percentage
        • Profit and Loss
        • Discounts & Sales Tax
        • Compound Interest
      • Geometry/Mensuration
        • Quadrilateral
        • Practical Geometry
        • Perimeter and Area
        • Data Handling
        • Introduction of Graphs
    • Class 8 Sample papers
      • 8th Question paper sa1
      • 8th Question paper sa2
  • CLASS 07
    • class 7 Science
      • class 7 Physics
      • class 7 chemistry
      • class 7 Biology
      • 7th Science Test Papers
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    • class 7th Maths
      • Class 07 Maths Tem-I
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    • Class7 Exam Papers
  • Class 06
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  • NCERT Solutions
    • X Science and Maths
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  • Class 11 - 12
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    • 12th Study Material
  • NTSE
    • NTSE SAMPLE PAPER