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Chapters
2: Work, Power and Energy
3: Machines
▶ 4: Refraction of Light at Plane Surfaces
Chapter 5: Refraction of Light through Lenses
Chapter 6: Spectrum
Chapter 7: Sound
Chapter 8: Current Electricity
Chapter 9: Household Circuits
Chapter 10: Electromagnetism
Chapter 11: Heat
Chapter 12: Modern Physics
![Lakhmir Singh solutions for फिज़िक्स [अंग्रेजी] कक्षा १० आईसीएसई chapter 4 - Refraction of Light at Plane Surfaces - Shaalaa.com](/images/physics-english-class-10-icse_6:bfbcc704031b4fd398b72f80ee978e3f.jpg "Lakhmir Singh solutions for फिज़िक्स [अंग्रेजी] कक्षा १० आईसीएसई chapter 4 - Refraction of Light at Plane Surfaces")
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Solutions for Chapter 4: Refraction of Light at Plane Surfaces
Below listed, you can find solutions for Chapter 4 of CISCE Lakhmir Singh for फिज़िक्स [अंग्रेजी] कक्षा १० आईसीएसई.
Lakhmir Singh solutions for फिज़िक्स [अंग्रेजी] कक्षा १० आईसीएसई 4 Refraction of Light at Plane Surfaces Intex Question [Pages 84 - 89]
TEST YOUR UNDERSTANDING - 1
Explain the bending of a ray of light when it travels from a rarer to a denser medium.
Explain the bending of a ray of light when it travels from a denser to a rarer medium.
Explain the bending of a ray of light when it travels from the normal to the junction of the two media.
The refractive index of diamond is 2.42. What is the meaning of this statement?
State the Snell’s laws of refraction of light.
How does the speed of light in glass change on increasing the wavelength of light?
When a ray of light enters from one medium to another having different optical densities it bends. Why does this phenomenon occur?
A ray of monochromatic light is incident from the air on a glass slab:
(i) Draw a labelled ray diagram showing the change in the path of the ray till it emerges from the glass slab.
(ii) Name the two rays that are parallel to each other.
(iii) Mark the lateral displacement in your diagram.
Write the relation between the angle of incidence and the angle of refraction for a medium.
How is the refractive index of a material related to the speed of light in it?
What is the unit of refractive index?
The refractive index of glass with respect to air is aμg and that of water with respect to air is aμw. Write the expression for the refractive index of glass with respect to water.
Fill in the blanks with suitable answer:
When a ray of light goes from air into a clear material, you see the ray bend. How much the ray bends is determined by the ______ of the material.
When light travels from a rarer to a denser medium, its speed ______.
TEST YOUR UNDERSTANDING - 2
Define the term angle of deviation.
State three factors on which the angle of deviation depends.
Draw a ray diagram to show the refraction of a monochromatic ray through a prism when it suffers minimum deviation.
Choose the correct option for the following question.
A ray of light passes through an equilateral prism such that the angle of incidence is equal to the angle of emergence and each of these is equal to `3/4` of the angle of the prism. The angle of deviation is:
45°
29°
30°
20°
How does the angle of deviation produced by a prism depend on the colour of light used? Which colour of white light is deviated (i) most, (ii) least, by a prism?
A prism deviates a monochromatic ray of light through an angle d, where the angle of incidence at the surface of the prism is i. Draw a graph showing the variation of d with i. On your graph, show the angle of minimum deviation.
THINK AND ANSWER
What do you notice when you place a beaker of water on top of a printed paper? How does the letters on the paper look like through the beaker?
Solutions for 4: Refraction of Light at Plane Surfaces
Lakhmir Singh solutions for फिज़िक्स [अंग्रेजी] कक्षा १० आईसीएसई chapter 4 - Refraction of Light at Plane Surfaces
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