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Working on the light chapter of class 10 NCERT solutions will help candidates to build a strong foundation over the subject Physics. Knowing light reflection and refraction class 10 questions and answers will help students of class 10 to bag a decent score in class 10 board exams as. Go through them will help candidates get a clear idea modep how to approach the problems which in turn helps you to solve them in the most efficient way.

So why wait? Read on to find out everything about light reflection and refraction class 10 important questions with answers. Question 1 Define the principal focus of a concave mirror. Answer: The principal focus of a concave mirror is a point on its principal axis to which all the light rays which are parallel and close to the axis, converge after reflection ncert solutions class 10th physics chapter light model the concave mirror.

Question 2 The radius of curvature of a spherical mirror is 20 cm. What is its focal length? Question 3 Name a mirror that can give an erect and enlarged image of an object. Answer: Concave mirror. Question 4 Why do we prefer a convex mirror as a rear-view mirror in vehicles? Answer: We prefer a convex mirror as a rear-view mirror in vehicles because of two reasons :.

Question 1 Find the focal ligjt of a convex mirror whose radius of curvature is 32 cm. Question 2 A concave mirror produces three times magnified enlarged real image of an object placed at 10 cm in front pphysics it. Where is the image located? Solution: Because the image is real, so magnification m must be negative. Thus the image is located at a distance of 30 cm mode the mirror ncert solutions class 10th physics chapter light model the object side of the mirror.

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? Answer: The light-ray bends towards the normal because the ray of light goes from a rarer medium to a denser medium.

Question 2 Light enters from air to glass having refractive index 1. What clss the speed of light in the glass? The speed of light in vacuum is 3 x 10 8 ms Question solutins Find out, from Table Also find the medium with lowest optical density. Answer: From table Question chaptsr You are given kerosene, turpentine and water.

In which of these does the soluttions travel fastest? Soluhions the information given c,ass Table Question 5 The refractive index of diamond is 2. What is the meaning of this statement? Answer: By saying that the refractive index of diamond is 2. Question 1 Define 1 dioptre of power of a lens. Answer: One dioptre is the power of a lens whose focal length is 1 metre.

Question 2 A convex lens forms clasa 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 solutiosn of the object?

Also, find the power of the lens. Question 3 Find the power of a concave lens lght focal length 2 m. Question 1 Which one of the following materials cannot be used to make a lens? 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? Answer: d Ncert Solutions Class 10th Physics Chapter Light Jacket Between oslutions pole of the mirror and its principal focus.

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? Answer: b At twice the focal length. Solutiins 4 A spherical mirror and a thin spherical lens have each a focal length of cm. The mirror and the lens are likely to be : a Both concave. Answer: a Both concave. 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.

Answer: d Either plane or convex. Question 6 Which of the following lenses would you prefer to use while reading small letters found in a dictionary? Answer: c A convex lens of focal length 5 cm. 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 solutkons 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.

Answer: A concave mirror gives an erect image when the object is placed between the focus F and the pole P ncert solutions class 10th physics chapter light model the concave mirror, i. The image thus formed will be ncert solutions class 10th physics chapter light model, erect and larger than the object.

Question 8 Name the type of mirror used in the following situations. Support your answer with reason. Answer: a Concave mirrors are used as reflectors in headlights of cars. When a bulb is located at the focus of the concave mirror, the light rays after reflection from the mirror travel over a large distance as a parallel beam of phjsics intensity.

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. Ncert solutions class 10th physics chapter light model your 10tj. Answer: A convex lens forms complete image of an object, even if its one half is covered with black paper. It can be explained by considering following two cases.

Case I : When the upper half of the lens is covered In this case, a ray of light coming from the object will be refracted by the lower half of chaptre lens. These rays meet at the other side of moxel lens to form the image of the given object, as shown in the following figure. Case II: When the lower half of the lens Is covered In this case, a ray of light ndert from the object is refracted by the upper half of the lens.

These soltions ncert solutions class 10th physics chapter light model at the other side of the lens to form the image of the ncert solutions class 10th physics chapter light model object, as shown in the given figure.

Question 10 An object 5 cm in length is held 25 cm away from Ncert Solutions Class 10th Physics Chapter Light Mod a converging lens of focal length 10 cm. Draw the ray diagram and find the position, size and the nature of the image formed. The negative value of image height indicates that the image formed is inverted. The position, size, and nature of image are shown alongside in the ray diagram.

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. Question 12 An object is placed at a distance of 10 cm from a convex mirror of focal ncert solutions class 10th physics chapter light model 15 cm.

Find clads position and nature of the image. Thus, image is virtual, erect and diminished. What does this mean? Question 14 An object 5. Find the position of the image, its nature and size. Question 15 An object of size 7.

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. The image is real, inverted and enlarged in size. Question nxert Find the focal length of a lens of power What type of lens is this?

Find the focal length of the lens. Is the prescribed lens diverging or llght Reflection of light ncdrt curved surfaces; Images ncerh by spherical mirrors, center of curvature, principal axis, principal focus, focal length, mirror formula Derivation not requiredmagnification.

Refraction; laws of refraction, refractive index. Refraction of light by spherical lens; Image formed by spherical lenses; Lens formula Derivation not required ; Magnification.

Power of a lens.

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Aug 10, �� NCERT Solutions For Science Class 10 - Light Reflection and Refraction. Chapter 10 Class 10 Science is mostly about reflection and refraction of light. The main topics included consist of spherical mirrors, magnification, reflection, refraction and power of a lens. To provide simplification, Light Reflection and Refraction Class 10 Solutions include various diagrams, logical problems and . Nov 27, �� Here is the chapter-wise NCERT Solutions for class 10 science is listed below: Chapter 1 Chemical Reactions and Equations; Chapter 2 Acids, Bases and Salts; Chapter 3 Metals and Non-metals; Chapter 4 Carbon and Its Compounds; Chapter 5 Periodic Classification of Elements; Chapter 6 Life Processes; Chapter 7 Control and Coordination. > Light is the form of energy that provides sensation of vision. > Some common phenomena associated with lights are image formation by mirrors, the twinkling of stars, the beautiful colours of a rainbow, bending of light by a medium and so on. Properties of Light > Electromagnetic wave, so does not require any medium to travel. > Light tends to travel in straight line. > Light has.

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