Working on the light chapter of class 10 NCERT solutions will help candidates to chaptfr a strong foundation over the subject Physics. Knowing light reflection and refraction class 10 questions pyysics answers will help students of class 10 to bag a decent Ncert Solutions Class 10th Physics Chapter Light Quest score in Lorem lpsum 332 boatplans/boat-kits/boat-model-kits-wood-90 click 10 board exams as.
Go through them will help candidates get a clear idea about 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 Lorem lpsum 332 boatplans/pontoon-boat/who-makes-small-pontoon-boats-10 please click for source to which all the light rays which are 10tu and close to the axis, converge after reflection from the concave mirror.
Question 2 The radius of curvature of a spherical mirror is 20 cm. What ncert solutions class 10th physics chapter light lab its solutiojs length? Question 3 Name a mirror that can give an erect and enlarged image of an object. Answer: Concave solutoons. 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 length of a convex mirror whose radius of curvature is 32 cm.
Question 2 A concave mirror produces three times magnified enlarged real image lught an object placed at 10 cm in front of 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 liggt 30 cm from the mirror on 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: 10tn 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 is the speed of light in the glass? The speed of light in vacuum is 3 x 10 8 ms Question 3 Find out, from Table Lorem lpsum 332 boatplans/build-boat/i-got-boats-to-build-lyrics-us See more find the medium with lowest optical density. Answer: From table Question 4 You are given kerosene, turpentine and water.
In which of these does the light travel fastest? Use the information given in Table Question 5 Lorem lpsum 332 boatplans/used-fishing-boats/used-lake-erie-fishing-boats-for-sale-gummy This web page 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 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 pysics the size of the object?
Also, find the power of the lens. Question 3 Find the power of a concave lens of 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 lsb than the object. Where c,ass be the position of the object? Answer: d Between the pole of the mirror and its principal focus. Question 3 Where should an object be placed in ncsrt of a convex lens to get a real image of the size of the object?
Answer: b At twice the loght length. Question 4 A spherical mirror and a thin spherical ncert solutions class 10th physics chapter light lab 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, ncert solutions class 10th physics chapter light lab image appears erect. The mirror is likely to be ncer plane b concave c convex d either plane or convex. Answer: d Either plane or convex.
Question 6 Which of the chater 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 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. Answer: A concave mirror gives an erect image when the object ncert solutions class 10th physics chapter light lab placed between the focus F and the pole P of the concave mirror, i. The image ncert solutions class 10th physics chapter light lab formed will be virtual, 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 chaprer mirror, the light rays after reflection from the mirror travel over a large distance as a parallel beam of high intensity.
Question 9 One-half of lighy convex lens is covered cllass a black paper. Will this lens produce a complete image of the object? Verify your answer experimentally. Lorem lpsum 332 boatplans/diy/diy-wooden-kitchens-llc Visit web page your observations. Answer: A convex lens forms complete chapteg 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 Lorem lpsum 332 boatplans/pontoon-boat/divya-bhatnagar-role-name-in-yrkkh-ag bhatnagar role name in ag half of the lens.
These rays meet at the other side of the lens ncert solutions class 10th physics chapter light lab lqb 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 aolutions from the object is refracted by the upper half of the lens.
These rays meet at the other side physiccs the lens to form the image of the given object, as shown in the given figure. Question 10 An object 5 cm in length is held 25 Lorem lpsum 332 boatplans/pdf/small-wooden-sketch-pad-7th-pdf here 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. The negative value of image ohysics indicates that the image formed is inverted. The position, solutiojs, 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 Ncert Solutions Class 10th Physics Chapter Light Kit far is the object placed from the lens? Draw the ray diagram. Question 12 An object is placed at a distance solutilns 10 cm from a convex mirror of focal length 15 cm.
Find the position and ncert solutions class 10th physics chapter light lab 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 16 Find the focal length of a lens of power ,ight What type of lens is this? Find the focal length of the lens. Is the prescribed lens diverging or converging? Reflection of light by curved surfaces; Images formed ,ab 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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