NCERT Solutions for Class 10 Science Chapter 9 Intext Questions
NCERT Solutions Class 10 Science Chapter 9 (Light- Reflection and Refraction)
Page Number: 142
Question 1
Define the principal focus of a concave mirror.
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Question 2
The radius of curvature of a spherical mirror is 20 cm. What is its focal length?
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Question 3
Name a mirror that can give an erect and enlarged image of an object.
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Question 4
Why do we prefer a convex mirror as a rear-view mirror in vehicles ?
Answer:
NCERT Solutions Class 10 Science Chapter 9 (Light- Reflection and Refraction)
Page Number: 145
Question 1
Find the focal length of a convex mirror whose radius of curvature is 32 cm.
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Question 2
A concave mirror produces three times magnified (enlarged) real image of an object placed at 10 cm in front of it. Where is the image located ?
Answer:
NCERT Solutions Class 10 Science Chapter 9 (Light- Reflection and Refraction)
Page Number: 150
Question 1
A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal ? Why ?
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Question 2
Light enters from air to glass having refractive index 1.50. What is the speed of light in the glass ? The speed of light in vacuum is 3 x 108 ms-1.
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Question 3
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Question 4
You are given kerosene, turpentine and water. In which of these does the light travel fastest ? Use the information given in Table 10.3.
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Question 5
The refractive index of diamond is 2.42. What is the meaning of this statement?
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NCERT Solutions Class 10 Science Chapter 9 (Light- Reflection and Refraction)
Page Number: 158
Question 1
Define 1 dioptre of power of a lens.
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Question 2
A convex lens forms a real and inverted image of a needle at a distance of 50 cm from it. Where is the needle placed in front of the convex lens if the image is equal to the size of the object ? Also, find the power of the lens.
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Question 3
Find the power of a concave lens of focal length 2 m.
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NCERT Solutions for Class 10 Science Chapter 9 Exercise Questions (Textbook Chapter End Questions)
NCERT Solutions Class 10 Science Chapter 9 (Light- Reflection and Refraction)
Question 1
Which one of the following materials cannot be used to make a lens ?
(a) Water
(b) Glass
(c) Plastic
(d) Clay
Answer:
Question 2
The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object ?
(a) Between the principal focus and the centre of curvature
(b) At the centre of curvature
(c) Beyond the centre of curvature
(d) Between the pole of the mirror and its principal focus.
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Question 3
Where should an object be placed in front of a convex lens to get a real image of the size of the object?
(a) At the principal focus of the lens
(b) At twice the focal length
(c) At infinity
(d) Between the optical centre of the lens- and its principal focus
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Question 4
A spherical mirror and a thin spherical lens have each a focal length of -15 cm. The mirror and the lens are likely to be :
(a) Both concave.
(b) Both convex.
(c) the mirror is concave and the lens is convex.
(d) the mirror is convex, but the lens is concave.
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Question 5
No matter how far you stand from mirror, your image appears erect. The mirror is likely to be
(a) plane
(b) concave
(c) convex
(d) either plane or convex.
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Question 6
Which of the following lenses would you prefer to use while reading small letters found in a dictionary ?
(a) A convex lens of focal length 50 cm.
(b) A concave lens of focal length 50 cm.
(c) A convex lens of focal length 5 cm.
(d) A concave lens of focal length 5 cm.
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Question 7
We wish to obtain an erect image of an object, using a concave mirror of focal length 15 cm. What should be the range of distance of the object from the mirror ? What is the nature of the image ? Is the image larger or smaller than the object ? Draw a ray diagram to show the image formation in this case.
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Question 8
Name the type of mirror used in the following situations.
(a) Headlights of a car.
(b) Side/rear-view mirror of a vehicle.
(c) Solar furnace.
Support your answer with reason.
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Question 9
One-half of a convex lens is covered with a black paper. Will this lens produce a complete image of the object ? Verify your answer experimentally. Explain your observations.
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Question 10
An object 5 cm in length is held 25 cm away from a converging lens of focal length 10 cm. Draw the ray diagram and find the position, size and the nature of the image formed.
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Question 11
A concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens ? Draw the ray diagram.
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Question 12
An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image.
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Question 13
The magnification produced by a plane mirror is +1. What does this mean ?
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Question 14
An object 5.0 cm in length is placed at a distance of 20 cm in front of a convex mirror of radius of curvature 30 cm. Find the position of the image, its nature and size.
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Question 15
An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm. At what distance from the mirror should a screen be placed, so that a sharp focussed image can be obtained ? Find the size and the nature of the image.
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Question 16
Find the focal length of a lens of power -2.0 D. What type of lens is this ?
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Question 17
A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging ?
Answer:
Light Reflection and Refraction in NCERT Solutions Class 10 Science chapter 9: You candidates may obtain class 10 NCERT solutions for light reflection and refraction in this page. Practicing the light chapter of the Class 10 NCERT answers will assist candidates in developing a solid understanding of Physics. Understanding class 10 questions and answers related to light reflection and refraction will also help students achieve a respectable grade on their class 10 board exams.
This post contains class 10 numerical problems related to light reflection and refraction in addition to the NCERT Solutions Class 10 Science chapter 9 Light Reflection and Refraction. Examining them will provide candidates a clear understanding of how to approach the difficulties, which will enable you to find the most effective solution. Why then wait? Discover everything there is to know about light reflection and refraction in class 10 by reading on for key questions and answers.
The organisation of NCERT Solutions Class 10 Science chapter 9 Light Reflection and Refraction presents a clear overview of scientific subjects that are relevant to everyday life. Students have been taught basic science with no clear distinctions between subjects like biology, chemistry, and physics. All of the country’s schools acknowledge and promote NCERT. Here are some explanations for why you should trust NCERT Solutions:
Students are forced to think creatively and apply the principles they have learnt in the chapter by the challenging questions that are put between the chapters.
You may get comprehensive answers to the chapter problems in NCERT Solutions, which will help you do well on the CBSE exams.
Students like using NCERT Solutions, particularly in the subjects of science and maths. This section contains the NCERT Solutions Class 10 Science chapter 9: Light Reflection and Refraction. The solutions to all of the problems in the textbook are clearly explained. Get the complete set of NCERT Solutions for Light Reflection and Refraction in Chapter 9 here for free!
One of the most significant chapters in Class 10 Science is NCERT Solutions Class 10 Science chapter 9. The most recent marking scheme assigns a weightage of 7 marks to this chapter. Students will gain a thorough understanding of light phenomena including refraction and reflection in Class 10 Science’s NCERT Solutions Class 10 Science chapter 9. Drawing ray diagrams, spherical mirrors, and image generation will all be covered.
Ever wonder why certain things are visible to us? Light is the answer to the query. Sunlight aids in our ability to see items during the day. An item reflects light when it hits it. When this reflected light reaches our eyes, it aids in our ability to see. Light is responsible for many amazing occurrences, like the birth of stars and rainbows, among many others. Let’s examine the phenomena of refraction and reflection utilising the straight-line propagation of light in Class 10 Science’s Chapter 9 Light Reflection and Refraction. In this chapter, we will also attempt to comprehend how spherical mirrors reflect light by utilising the NCERT Solutions from Bhautik Study.
Light Reflection and Refraction in NCERT Solutions Class 10 Science chapter 9: Key Elements of the NCERT Solutions
offers thorough responses to every query posed in the chapter.
The material offered is accurate and suitable, and the language used is clear and understandable to all.
You can use these solutions for Olympiads, CBSE exams, and other competitive exams.
Students are given concise responses to aid in their understanding.
