Partial preview of the text
Download Light reflection and reflection and more Summaries Physics in PDF only on Docsity!
gui - Kerecnow ato Rergacrio® DLight - Tt te a form of energy thal can be detected by oun eyes. OR Zit & a form ene hich produces =the —Sensatlon ri Sight o ee * ail f 2) Luminous objects - “The objects whith emi thet own Gght 1s ~ called luminoua objects « ex — Sun, sla, bulb etc. 3) Non-Lumtnow. ejects - The object which dow not emll thee own light 1s called _non—luminous object. Ex - Moon, pen eh. Lang OF Rerecro® OF Liqur The angle oh Inddence ts equal to the angle of repiedtion, =¥, D the wcldent roy, the normal to the wivror at the point H Tncidence and the pected vay, al Ue in the Same Plane . Wormal Trudent Ray Pojected ey, Angle th Tnetderve Angle % Repedtton. Thoreqnes Or Inace Te A ease Muaqor DImmage size - objed size 2) Image distance = Objet distance D Tmoge in always Coderally Wnvorled 4) Image alway laterally _ twverted 5) Image i always virtual Srrcaicne Virgors The reflecting, Surface 6f a sphortal mirror may be Cuved = Inwan % outwarde . A spherical mivvor, whose reffecing Sunjace fs —cunved. fnworde, that is, spaces towards the ~ Centre of the sphowe, & called @ Concave wiror. A spherical mitror whote refleding, sunjave is curved oulwanda, {s called & Convex minor. @ Concave mirror b) Conver mivor C Convex oa as P vinciple Peace nce wal 4 7. as we i! Cc (é Center % Centve Cuvvalwie Curvature The Center of Curvature : It ts the potl tm the centre of the miwor which passes through He Curve of the minor and hos the same Lamgent and “ wwvalune al thal polnt. - It ts denoled by the letter ‘c’. * Kadi of Curvature (r) + Tl's the lineox distance belween Tole and the Cenlex 4 cwwvalune. ( Image Formed 4y, Spherical Miron Ust peels i, Saye ty, Sportal Mion Using. TA wy pavallel to the prindipal axis, aptor reffecton , wlll poss through the fn Cone QO (Concave mivor or a ve doe yoo he poet fouw ta cae Of 0 Conver in Concave i through = +h ‘al Q concave mirror or ym berry & : tno Ne anit oa of eri mirror, posses povallel to the principal. ag *” F ov ii] Ray passing, through the centre Of urvatuwe Of a concave mirror” or divected fm the dlvedion 0 the centre Of uvvalune Of O wnven minor, ager reflectton , fs reflected back along, the Some pal. ~) BA ra obliquely, Berg perensy - iol ee -The tndden and principal wt (og tains Fi ajetin) ob! mg og to the Ne on the concave Lage Fonmation, by, Concave stow 4 >. aA snfinury ( z arts, towards a - A a Ym re, aT a 8 es a a th F + (a) ME real cs im = ts » N o mirror oy @& conven angla with the N Object position Image position Size of image Nature of image At infinity Focus (F) Point sized Real Beyond C Between F and ¢ Small Real and inverted Arc AC Same as that of the object | Real and inverted Between C and F Behind C Enlarged Real and inverted Sax Comtvertet Fe Rercecto® By PPHERICAL Missors De ts always ploud 40 the (ot 0 the minor. This that the | a) the mnt i ete fom te Bt beer for TAM distances reamed 6 the vf the oftetn (along. + x- axe) ane token a» positive while thee a te ses ane token os veqative. Wil AU distances parablel Co the principal axis ome rmeosuned. from. the WJ Didancn meowned perpendiutar te and obove the prinuipal and tA ya Gen ao positive - prepa WV) Diclancer meouuned perpendicular 6 and bela the prinuipal axis (along — yp axis) ove Cohen an negative . ee Object om the lett Ducction of Paitin lee A incident light Height upwards | ¢_ Distance towards | Distance towastts evel he ae fever « = pte night (ver = ® N\s80R Forte re at? Mognificetton. m= Hi nt the i 2 (h’) ‘ape iat at (n> v— image distance u—> objet — dielance feat lg Ror eacnont FEF RATION > Rebrodion ig the phenomenon ch in the path tat in ms rh ‘methum te “aside “tT P 4 > When Gant Yore 10 dente di tt bends he on ye yen medium ends (owancs When Ctght goes from dee b vorr medium tt tends auny om the — normal. * det voy., normal amd the refracted vey, lic in the Same p . oT wL ‘nc! EN Sat ki Le Sint = conmtant Sin - This constant value % called the refractve index o the Second medium with vapet to the fuut. This & called Swoll's (aw, Fofeclion thsough a Goa Slab Medium | (Aur) Medium 2 (Glass) | medium 1 is vaccum or ab, then the refractive index of medium 2 %& Considered with vapect vaccum. >This & called the absolute sefractve Index of the medium. ° ° ia a ing Tah ele “¥ Optial Density, > The — obilt a medum t rerot Colt & aio exprased tn tom | ils oral Spats m " , tical danctty ho a definite connotatton . ms net the Same ad man density: Fefracton. by Sphevienl Lens * A transponont material bound lve Surfs ae Sphoical © au Sphoticol , form a (ens. : D Convex. Or Converging lens + Th is thider al the cenbc than af the edge im “ v1 O ponatll — beam on h it. 1) Concave or duet. bas Tt i +hinnen nities ” fa at the édaes. LT: i) Concave or cog Cons : Tt & thine of the Centre than at the edges. )( -t di a beam On Yefvaction through il. -Té sag Virlual at an m ol cena thee hows ane Called entra Of Lurvolune of the i$. ~The Contre of curva of a Gu OG usually repraontid os C. - Since there one two Centus 9% curvahiae , we may vepruent them a C1 ond C2. > fn tmaginory straight (Ine ing through the two © centres «Of Curvaline a re t called ib Bes! axis. ~The Centro point of a = tens. on th phat cenbu. Oplical .-” (ene Cent ro “Twage Formatten by, Lavoe DA the object , povollel fa the prin ‘ Me 1a eas See ene ir Olhor stde the lens, 2 4 -In tore & @ concave , the ¥ ona iv the principal foun (owated on the soe side the tone. fen > | — ee f Lans V . " JA bee Lone Convex A 10! ci ° om Ba a 2 ae hee fe vine Q Conver lens, will emonge M~. a a] 0 ty Convex, Lens Concave ere Tenage Formation by, Concone Larus Highty dtwivished, | Vivtuel and erect point - sized Belween infivity | Between fou f, | Diminished Virtual and evect ard optical centre | ond optial entre 0 of the tens | 0 na fe es A = [A Lens Formula And Magyificition. Sa u AL f m = Height the Im =-h Height the aed h Town of a lens = 41 a ‘The SI unit of power % a leas I ‘dioptve’ -It is denoled by 'D. -The power % a conven lene fe poste as a wonven ler has a pale Cangth , wile the power % a concave lens is negative as woncove lene has a negative focal Cenatn« 
