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An object has image thrice of its original size when kept at and from a convex lens. Focal length of the lens is

An object has image thrice of its original size when kept at 8 cm and
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Notes prepared boy- Seeksha Paba Optical instreument Obtical Instriements lenses and prisms to are the devices which make use of mirrors, devices help the huma extend the range of vision of human eye These of tiny objects, for det eye in observing highly magnified images Off objects. instruments. Microscopes and telescopes are common examples of optical 1) Microscope:- An optical instrument used for observing highly magnified images of tiny object is callid as microsede. Michosc- oper are of two types: (a) Simple microscope (a) Siniple Microscope OR Magnitying Glass A simple microscope is just a convex lons of thort foral langtr, held close to the eye to see the magnified images of tiny objects. Principle:- When a small object is placed between optical centre 4 focus of a convex lens (having short focal length), its virtual, erect. \& magnified image is formed at the least distance of distinct vision from the eye held close to the lens. That's Why, simple microscope is also called a magnifying glass. Image formation - A simble microscope consests of a converging lens of small focal length. An object is held between optical Centre ' ' and principat focus ' ' of the lens 1 or to the puncipal axis. A. virtual, erect \& magnified image ' f formed on the same side of the lens os the lens is so adjusted that the final image 'is formed at the dictonce's' the object. The porition of from the lens as shown in fig. Image 'A'B' is observed by keping from eye elose to the lens. In fig, least distance of distinct Magnifying powee: The magnifying power of a simple microseda is vision for a normal eye. defined os the ratio of the angles subtended by the image and the dject REDMI NOTE 10 LITE
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Question Text
An object has image thrice of its original size when kept at and from a convex lens. Focal length of the lens is
Updated OnAug 25, 2022
TopicOptics
SubjectPhysics
ClassClass 12
Answer Type Video solution: 1
Upvotes114
Avg. Video Duration3 min