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(b) What type of image is always made by a concave lens? 4 years ago Deepak Rock class 10 lakhmir singh refraction of light A ray of light is going towards the focus of a concave lens. Draw a ray diagram to show the path of this ray of light after refraction through the lens. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light Which type of lenses are: (a) thinner in the middle than at the edges? (b) thicker in the middle than at the edges? 4 years ago Deepak Rock class 10 lakhmir singh refraction of light Copy and complete the diagram below to show what happens to the rays of light when they pass through the concave lens : 4 years ago Deepak Rock class 10 lakhmir singh refraction of light If the image formed by a lens is always diminished and erect, what is the nature of the lens? 4 years ago Deepak Rock class 10 lakhmir singh refraction of light An object 50 cm tall is placed on the principal axis of a convex lens. Its 20 cm tall image is formed on the screen placed at a distance of 10 cm from the lens. Calculate the focal length of the lens. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm, find the focal length of the lens. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light A magnifying lens has a focal length of 100 mm. An object whose size is 16 mm is placed at some distance from the lens so that an image is formed at a distance of 25 cm in front of the lens. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light A student did an experiment with a convex lens. He put an object at different distances 25 cm, 30 cm, 40 cm, 60 cm and 120 cm from the lens. In each case he measured the distance of the image from the lens. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light Find the nature, position and magnification of the images formed by a convex lens of focal length 0.20 m if the object is placed at a distance of : (i) 0.50 m (ii) 0.25 m (iii) 0.15 m (b) Which of the above cases represents the use of convex lens... 4 years ago Deepak Rock class 10 lakhmir singh refraction of light An object 3 cm high is placed 24 cm away from a convex lens of focal length 8 cm. Find by calculations, the position, height and nature of the image. (b) If the object is moved to a point only 3 cm away from the lens 4 years ago Deepak Rock class 10 lakhmir singh refraction of light An object 2 cm tall stands on the principal axis of a converging lens of focal length 8 cm. Find the position, nature and size of the image formed if the object is : (i) 12 cm from the lens (ii) 6 cm from the lens (b) State one practical applicati... 4 years ago Deepak Rock class 10 lakhmir singh refraction of light An object placed 4 cm in front of a converging lens produces a real image 12 cm from the lens. (a) What is the magnification of the image? (b) What is the focal length of the lens? 4 years ago Deepak Rock class 10 lakhmir singh refraction of light A lens of focal length 20 cm is used to produce a ten times magnified image of a film slide on a screen. How far must the slide be placed from the lens? 4 years ago Deepak Rock class 10 lakhmir singh refraction of light Determine how far an object must be placed in front of a converging lens of focal length 10 cm in order to produce an erect (upright) image of linear magnification 4. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light A convex lens of focal length 6 cm is held 4 cm from a newspaper which has print 0.5 cm high. By calculation, determine the size and nature of the image produced. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light A convex lens of focal length 0.10 m is used to form a magnified image of an object of height 5 mm placed at a distance of 0.08 m from the lens. Calculate the position, nature and size of the image. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light An erect image 2.0 cm high is formed 12 cm from a lens, the object being 0.5 cm high. Find the focal length of the lens. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light The filament of a lamp is 80 cm from a screen and a converging lens forms an image of it on a screen, magnified three times. Find the distance of the lens from the filament and the focal length of the lens. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light An object 2 cm tall is placed on the axis of a convex lens of focal length 5 cm at a distance of 10 m from the optical centre of the lens. 4 years ago Deepak Rock class 10 lakhmir singh refraction of light Page 4 / 5 Prev 1 2 3 4 5 Next Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? Δ Home About Us Contact Us Privacy Policy Term of Use Copyright © 2020 Eanshub All Rights Reserved
