0000075005 00000 n Plano-Convex Lens. The lens has a focal length of 35 millimeters. Here we will discuss about the Concave and Convex Lenses only. Convex lenses are also known as converging lenses since the rays converge after falling on the convex lens while the concave lenses are known as diverging lenses as the rays diverge after falling on the concave lens. 2. <> light box or pencil torch Action The students observe the effect on light passing through the various lenses. 7 0 obj <> _�,�c�O��?`�|��9�h��K���X�����%H��*7��YB����� ��]�|e��M�f݅{kM�JT�i`}s��m"R����qq��-�pe���@d� 0000080785 00000 n Concave Lens. [ 9 0 R] The lens has a focal length of 35 millimeters. Converging Meniscus. 13 0 obj 0000003875 00000 n endobj 0000009144 00000 n 0000011857 00000 n 118 0 obj << /Linearized 1 /O 121 /H [ 1642 276 ] /L 98018 /E 81993 /N 1 /T 95539 >> endobj xref 118 40 0000000016 00000 n 0000009167 00000 n 0000075291 00000 n Generally, a convex lens forms a real image, but it can also create a virtual image when the object is in the middle of the focus and optical centre. 0000003341 00000 n Diagram: (Given + Unknowns) Equation. 0000006821 00000 n 6. endstream .���ˋO׿�>���k������\H�-X��h������~O�|��g�+s�h�����߃�� ��Tp+s���Q�w�Q�ąF3�D@����b9����W���_��{_/9wv�7�~��>�. Concave and convex both are used as an adjective to denote an entity that has outline or surface curved inside or bulges outside. PDF | On Apr 26, 2013, Shuang Zhang and others published Metalens with convex and concave functionality | Find, read and cite all the research you need on ResearchGate endobj Physics 152 Convex & Concave MIRROR Worksheet The same object (height = y) is placed at several different distances s to the left of the same mirror (focal length = f). A lens is a . 9 0 obj In this article, we will learn about image formation by concave and convex lenses. R. Signs for Lensmaker’s Equation 1. 0000020147 00000 n <> 5 0 obj 1 0 obj 8 0 obj Conversely, the concave lenses are thinner at the centre and thicker at its edges, in structure. Lenses – Concave and Convex Apparatus selection of lenses, collimated light source, e.g. Then reverse the order of the lenses. 0000043302 00000 n 0000076582 00000 n There are two types of lens: convex and . (a) Concave mirror as well as convex lens (b) Convex mirror as well as concave lens (c) Two plane mirrors placed at 90° to each other (d) Concave mirror as well as concave lens 2. ). 6. %PDF-1.3 %���� R 1 and R 2 are positive for convex outward surface and negative for concave surface. Slide the convex and concave lenses apart to observe the effect of a combination of two lenses. 0000001505 00000 n endobj 0000022906 00000 n For each case, draw the 3 principal rays to locate the image. 0000014387 00000 n <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 4 0 R/StructParents 0>> %���� 0000003811 00000 n block that causes light to refract to form an image. 7) A 2-meters-tall person is located 5 meters from a camera lens (camera lenses are convex lenses). Trace at least one pattern of this type. 0000020124 00000 n 7) A 2-meters-tall person is located 5 meters from a camera lens (camera lenses are convex lenses). H�b``Pc``�b```��g�8�� +C1�8?s� _o���N�k���BR���%=X#����)Mk|f����!����e ���~i.�Z ]���� 0000011269 00000 n Diagram: (Given + Unknowns) Equation. 4 0 obj 5. They are:- 1. 11 0 obj Focal length f is positive for converging and negative for diverging lenses. 0000011880 00000 n 0000002391 00000 n 0000017476 00000 n A concave surface is like the interior of a circle. Use the thin lens equation to find the distance of the image. Lecture 37: Lenses and mirrors •Spherical lenses: converging, diverging •Plane mirrors •Spherical mirrors: concave, convex The animated ray diagrams were created by Dr. Alan Pringle. Diverging Meniscus. Block out the center 3 rays (the ���+�9����;:„�(���Bβ8���G�]r����X��1O!�x�A���h��_�@�WcH�B�!�γ �xR���OZզ��Z¦�vk�6o��R0���LZb�p"1�Og����X�]2׃��C��~ܘd��-�d P�N�_��_V��5����V~�iY�ZV�:��,�C��W�+��Ţ�O�#W���b�����Pj������oC=c�s��3���?�e6 0000064525 00000 n <> <> 0000003105 00000 n endobj There are mainly two types of lenses. The focal length of a convex lens is positive, while that of a concave lens is negative. 6b) A 15.0 cm object is placed 10.0 cm from a convex lens, which has a focal length of 15.0 cm. 6 0 obj convex lens both convex and concave lenses concave lens Question 2 Recall: The first microscope could magnify small objects by 9 times 3 times 270 times Question 3 Match: The terms endoscope, microscope and telescope are used in either the Cosmos magazine article or … Place the convex lens in the path of the five rays. 0000025991 00000 n endobj They should try to describe any images they form in terms of magnification, upright or inverted, real or … Concave and Convex Lenses - The type of lenses which converge the light beam coming from the source to one point on the other side to form an image is called as a convex lens, while the concave lens which is thinner at the centre and gets thicker as we move towards the edges is called as Concave lens. Sub . 0000001918 00000 n A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. 3 0 obj endobj stream Negative (Concave) Positive (Convex) Sign convention. trailer << /Size 158 /Info 115 0 R /Root 119 0 R /Prev 95528 /ID[<9f2bee5f47d7913ed6f220dfb6da021e><5c496309e0b212f2a447c71de6696d27>] >> startxref 0 %%EOF 119 0 obj << /Type /Catalog /Pages 117 0 R /Metadata 116 0 R /Outlines 1 0 R /OpenAction [ 121 0 R /XYZ null null null ] /PageMode /UseNone /PageLabels 114 0 R /StructTreeRoot 120 0 R /PieceInfo << /MarkedPDF << /LastModified (D:20030620153248)>> >> /LastModified (D:20030620153248) /MarkInfo << /Marked true /LetterspaceFlags 0 >> >> endobj 120 0 obj << /Type /StructTreeRoot /ClassMap 13 0 R /RoleMap 12 0 R /K 92 0 R /ParentTree 107 0 R /ParentTreeNextKey 1 >> endobj 156 0 obj << /S 36 /O 131 /L 147 /C 163 /Filter /FlateDecode /Length 157 0 R >> stream

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