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QPTICAL INSTRUMENTS Aecommodation Power of Rye ‘tye is a@ hetura2- conver fens [which hes ability 40 change ‘is foce® Renghy @ndi can see Cleary _fhearby” "OS! toe Ast disten} objech « Such power is _Gifed A-P, Visuat Angle ~The angle swohidh ani objeeh subtends at eur eye | is cated the ‘Visual ongfe”.. THe abbarent. Size of ah object las seen by our “eye, gdebends »uben the visue® anghe . Larger Hoe |v. angke , bigger The abbarent Size cf He object. a AS aS L (ple | Verg. distant object (ike ryoon) , although pe ca abject _lvery big ind sige , @bbear_verg Srraf® b/e Eye al A ie subtend Jvery Sima. Visyek angke at the eve , To see prem bigger We Cannot idecrease their distonce_. But carl) the he&b PE telescope , Q Small dmage? of distent object be Formed eOwse +, the iene , Has [nage wi Kubtent @ Qovge visual angle ot te eve 4 One jObjegr s L120 apbenr big. : Magni fying Power — 94 1s defined as he reho of the Visuiad angle Sublended by the mage: formed by the inshument at jhe eye to Ihe Visued ange , sulbfended by fhe obyect wilhout inshument- ' S|mbke Microscobe — “Microscope is an oplte® instrument which of q chose & 1 Snake object , Hols Image subleds q. Yarge iigue®s engke at fhe eye $0 that object abpecvs Sarge. A Simpie microscape is just eyitnih ghert focus magnky tp me 65 Convex sdens 1 An ebjech! 4 be 5 ial asl seen is bOdcect bf/uo fens and focus \ my end eye ts just behined the Sens . i Joa a — (mage 13 appear erect [ek object, The poston oF object is ee So adjusted Poet image 1s formed ot a te Jopat distance of distinct vision(D=25%) A) oT Scanned by CamScanner i ving Power '- Let Op the ? the“ Lanagke subtended by Inrage et eye M x be the angie subtended by object AB of eR, when plated et SD I- did ; ie 16 pty Ongte Bublended by The | tmage ak eye ey) | a i ctangte s subtended why Object utahen placed at D(X), 5 = yon Tst Figure is ie Es eae Peer Cais 2 AL. 7p ~S t a al { Dd #Ue |; ore Fay fn. Fil OL 2c wae Ff j oe oD ‘deed 2 LD Bie: apie of bb begs pit { eon 2 eal fineQ irnage ts} et arti 4 ao Be m2 Ur-Ue - : in rece 3 wu a FP @ Ue te Ue f. it ae A Bitbyn api AT) a as ld ow dood tht Pea dz “bide dada diode ed we rr |. sigcattth “f: v1 Apr ssf j agioe topical diay nour! > Sy cde MNO 2 ey u Fror BoreiN sion. ri Node Mn above these tuo Fomudas we shoud Numene — Gein faae us] jAGGQ lee » AVE. y iol erred trmage) (5 “Fermed oy Simple 73) 2 pad? oh peal whassb’ ¢ aette Apes chao bg aoe Scanned by CamScanner | $ | { | { ms AB) / en! a TD Et te oo te re Ae a Td Gee ee pope o> er yee ER. ae 2S oe , i oe sins a ed J 5 Hy magni ies by object gens ¥> . eet tors Ae aa | A PO ee =e BEE Ne 1 = when Finel mege al gl due te efekehs # is at Leask diste nce. Ff distinct’ vision 2D Fey _eye feng). not + aed Pa | i ae ee ce i tt = Y JOST ie go NT a ae 2 f gt =p SUWe pe ae =i ii : AN: r= 0 t =-Ue Scanned by CamScanner g . ~ Note! Foy good magrif tat tng Power! of com de rs Ibe Sra “Sana ial adh. ri poh nievoscobe shoukd sk_Ashionormica® _ leheseobe S tis an opticeR inshyment usedito! see hea ens: heaven! “objects 4 —fiee_stars., WE St Sten: ene Subtends a Navge —visyad aryfe ot ithe a liaison __quirle Large tothe _ “eye. ers recs -wopstnutiins - “St Jtonsists eb 2. Song eine ley a-enven {Hens _of Rariqe’ rea engl and Bove _eherbire is _at one end a Ob jective en's) fond ot other end fens till be _¢envex having. __ smell —Focek_Leng hs ne apr age = pe athe on: _of ae ete a a See PRES c zi? i i Leh FAR ts) a. distant object dadhigeh uroake sie .cinit ot —— te objechve as j1vekt as/et exe (1 Length 4 ee 2 Sinale Compare 70, sistenks object). Lens 0 forms Q. and inverted. Image. vig’ ot is focus | Fo which z hb eA, ao. t 2 fens and fine? image , val" terms — a ees eye Rens , Remember Tr Prat mage formed n by “ebjechve “AB! | Shoutel dies a the focus ote Rens , q ro a: For ene Sens more Weert om: page ay = “ Bee ere ost Lae ee f ey As on! NVisten ok D a 7 “a 1 — =u a= aT oal BSTon ER | Fer exe Rens pa=0= 1 1 a 7 ie a = We (eee ‘ F H —p —-Ue Fe Scanned by CamScanner 
