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GCE JUN 2006 : A2 1 Energy, Oscillations and Fields (Irish Medium)

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Uimhir L rionaid 71 Uimhir Iarrth ra ADVANCED General Certificate of Education 2006 Fisic Aonad Meas naithe A2 1 ag meas n Mod l 4: Fuinneamh, Ascaluithe agus R ims [A2Y11] D ARDAOIN 1 MEITHEAMH, MAIDIN AM 1 uair 30 n im ad. TREOIR D IARRTH IR Scr obh d Uimhir L rionaid agus d Uimhir Iarrth ra sna sp sanna chuige sin ag barr an leathanaigh seo. Freagair gach ceann de na seacht gceist. Scr obh do fhreagra sna sp sanna chuige sin sa cheistph ip ar seo. EOLAS D IARRTH IR Is 90 an marc ioml n don ph ip ar seo. Meas n far caighde n na cumars ide scr ofa i gceisteanna 2(a) (ii), (c) agus 4(b). L ir onn figi ir idir l ib n ar thaobh na l imhe deise de leathanaigh na marcanna at ag dul do gach ceist n do gach cuid de cheist. Tarraing tear d aird ar an Bhileog Sonra agus Foirml at taobh istigh den cheistph ip ar seo. Tig leat ireamh n leictreonach a s id. Cuireann Ceist 7 le riachtanas mheas n sionoptach na Sonra ochta. Moltar duit tuairim is 55 n im ad a chaitheamh ar cheisteanna 1 6, agus tuairim is 35 n im ad ar cheist 7. Don Scr daitheoir amh in Uimhir Marcanna Ceiste 1 2 3 4 5 6 7 Marc Ioml n A2Y1S6 2663.03 M bh onn luachanna na dtairiseach fisiceach de dh th ort chun ceist ar bith ar an ph ip ar seo a fhreagairt, t siad le f il ar an Bhileog Sonra agus Foirml . Scr daitheoir Amh in Marcanna Athmharc Freagair gach ceann de na seacht gceist 1 (a) (i) Luaigh prionsabal imchoime d fuinnimh. _____________________________________________________ __________________________________________________ [1] (ii) Luaigh sampla praitici il de ch s ina bhfuil fuinneamh cin iteach chlaochl ina fhuinneamh teirmeach (teasa). _____________________________________________________ _____________________________________________________ __________________________________________________ [1] (b) Coinn tear liathr id dar mais 0.26 kg ar fos os cionn linge in chorntha cheartingearaigh dar tairiseach linge in k. (Is at sa tairiseach linge in n tairiseach na comhr ire i ndl Hooke.) Ar dt s b onn bun na liathr ide 0.55 m os cionn bharr an linge in neamh-chomhbhr ite, mar a thaispe ntar in F or 1.1. 0.55 m 0.15 m F or 1.1 A2Y1S6 2663.03 F or 1.2 2 [Turn over Ligtear don liathr id titim ansin sa d igh go dtiteann s ar an linge n, agus chomhbhr de 0.15 m. In F or 1.2 taispe ntar an linge n ag an mheandar a mb onn uas-chomhbhr ann, nuair a bh onn an liathr id ar fos ar s. Sna r omhaireachta seo th os, f adtar neamhshuntas a dh anamh d fhriota ocht aeir. Scr daitheoir Amh in Marcanna Athmharc (i) R omh an fuinneamh poit insil imtharraingteach a chailleann an liathr id idir na c sanna a thaispe ntar in F or 1.1 agus in F or 1.2. Fuinneamh poit insil imtharraingteach a chailltear = __________ J [2] (ii) Luaigh cad a tharla don fhuinneamh seo. _____________________________________________________ __________________________________________________ [1] (iii) Uaidh sin r omh an tairiseach linge in k. k = ___________ N m 1 A2Y1S6 2663.03 [2] 3 [Tiontaigh an leathanach 2 I gcodanna (a)(ii) agus (c) den cheist seo ba ch ir duit do fhreagra a thabhairt i bpr s lean nach. Meas n far th ar chaighde n na cumars ide scr ofa. Scr daitheoir Amh in Marcanna Athmharc (a) Sa Bhileog Foirml tugtar an slonn seo a leanas d iolrach pV an bhr agus toirt g is: pV = 1 Nm < c 2 > 3 (i) Luaigh cad d a seasann an t-iolrach Nm sa chothrom id seo. __________________________________________________ [1] (ii) Is a thugtar ar an chainn ocht <c2> n luas mhe n na gcearn g de na m il n . M nigh, i bhfocail, cad mar a gheof luas mhe n na gcearn g thacar de luachanna c1, c2, c3 ... de luasanna c na m il n . _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [3] A2Y1S6 2663.03 4 [Turn over (b) Sa Bhileog Foirml tugtar an slonn seo a leanas don mhe nfhuinneamh cin iteach <Ek> de mh il n: Scr daitheoir Amh in Marcanna Athmharc 1 3 m < c 2 > = kT 2 2 Is at in F or 2.1 n graf de mhe nfhuinneamh cin iteach <Ek> m il n ar theocht celsius . <Ek>/J E /J k 0 / C 0 Fig. (n l s to r ir sc la) F or 2.1 2.1 (not de scale) Faigh luachanna uimhri la do ghr d n agus d idirl ne fuinnimh an ghraif seo. Gr d n = ______________ J C 1 Idirl ne fuinnimh = ______________ J A2Y1S6 2663.03 [4] 5 [Tiontaigh an leathanach (c) Is tuiscint amh in a bhaineann leis an teoiric chin iteach n gur imbhualadh f orleaisteach a bh onn ann gach uair a bhuaileann m il n an gh is le balla an choime d in. Scr daitheoir Amh in Marcanna Athmharc Abair gur imbhualadh neamhleaisteach a bheadh ann, d an cur s os agus tabhair m ni ar a dtarl dh don gh s ansin. _________________________________________________________ _________________________________________________________ _________________________________________________________ ______________________________________________________ [3] Caighde n na cumars ide scr ofa A2Y1S6 2663.03 [1] 6 [Turn over LEATHANACH B N (Leanann na ceisteanna ar an ch ad leathanach eile) A2Y1S6 2663.03 7 [Tiontaigh an leathanach 3 Liathr id ar fhoirceann sreinge, t s luascadh ag duine sa d igh go mb onn s ag gluaiseacht faoi threoluas uilleach aonfhoirmeach i gciorcal cothrom nach (F or 3.1). Scr daitheoir Amh in Marcanna Athmharc F or 3.1 (a) In F or 3.2 taispe ntar bonnchl den liathr id agus ag gluaiseacht ina conair chiorclach. F or 3.2 (i) Ar F or 3.2, marc il an chonair a ngluaisfeadh an liathr id d mbrisfeadh an tsreang agus an liathr id sa su omh a thaispe ntar. [1] (ii) Tuigtear gur f rsa l raimsitheach (i dtreo l r an chiorcail) an f rsa at ag feidhmi ar an liathr id agus ag gluaiseacht ina conair chiorclach faoi threoluas uilleach aonfhoirmeach. M nigh cad chuige a gcaithfidh s a bheith sa treo seo. _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [1] A2Y1S6 2663.03 8 [Turn over (b) T mais 0.15 kg ag an liathr id agus t s ag gluaiseacht i gciorcal dar ga 0.60 m. D anann s 2.0 imrothl gach soicind. Scr daitheoir Amh in Marcanna Athmharc (i) Glactar leis go bhfuil an liathr id ag rothl agus an tsreang sa phl na chothrom nach. R omh an teannas T sa tsreang. Teannas = ________ N [2] (ii) D anta na f rinne, f gann me chan M na liathr ide nach bhfuil s ind anta don tsreang bheith cothrom nach. T sceitse den fh orch s in F or 3.3. T M F or 3.3 Glactar leis gurb an luach a r omhadh in (b)(i) an luach at ag cuid cothrom nach an teannais. Faigh an uillinn . = ________ A2Y1S6 2663.03 [3] 9 [Tiontaigh an leathanach 4 Ba ch ir duit cuid (b) den cheist seo a fhreagairt i bhfoirm n ta gearra. Meas n far th ar chaighde n na cumars ide seo. Scr daitheoir Amh in Marcanna Athmharc (a) T r ad ag gluaiseacht le gluaisne shimpl arm nach i l ne dh reach. Le linn na gluaisne seo, t an f rsa ar an r ad coimhr ireach leis an d l ithri n su omh cothroma ochta agus t s i malairt treo leis an d l ithri . 10 a/m s 2 5 6 6 4 4 2 2 0 2 4 x/mm 6 5 10 F or 4.1 Is at in F or 4.1 n graf de luasgh ar a an r ada mar fheidhm d dh l ithri x n su omh cothroma ochta. (i) M nigh cad mar a thaispe ntar in F or 4.1 go bhfuil an f rsa ar an r ad coimhr ireach le d l ithri an r ada n su omh cothroma ochta, agus go bhfuil an f rsa i malairt treo leis an d l ithri . _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [3] A2Y1S6 2663.03 10 [Turn over (ii) Agus F or 4.1 in s id, faigh aimpliti id agus peiriad na gluaisne. Scr daitheoir Amh in Marcanna Athmharc Aimpliti id = ___________ mm Peiriad = ___________ s [4] (b) Scr obh n ta athbhreithnithe, a bheadh f irsteanach don scr d seo, ar an bhar Maol agus Athshondas. Sa tSonra ocht tugtar an treoir: C ire il thuairisci il d fhreagairt minic ochta, d athshondas agus d ifeacht maolaithe. Is leor urcharphoint l iri ag sceits agus/n graif. _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ ______________________________________________________ [5] Caighde n na cumars ide scr ofa A2Y1S6 2663.03 [1] 11 [Tiontaigh an leathanach 5 Iarradh ar mhac l inn m ni a thabhairt ar r imse f rsa. Ba seo an freagra a thug s Scr daitheoir Amh in Marcanna Athmharc Is at i r imse f rsa n limist ar ina dt ann f rsa i bhfeidhm ar aonadlucht. (a) Sainaithin dh earr id, ruda a f gadh ar l r n ruda neamhbhainteacha i m ni an mhic l inn. 1. _______________________________________________________ _________________________________________________________ 2. _______________________________________________________ ______________________________________________________ [2] (b) Is cos il go raibh an m ni ar r imse f rsa mheascadh leis an sainmh ni ar neart r imse leictrigh ag an mhac l inn. Sainmh nigh neart r imse leictrigh agus luaigh cad mar a fhaightear treo an r imse leictrigh. _________________________________________________________ _________________________________________________________ _________________________________________________________ ______________________________________________________ [2] A2Y1S6 2663.03 12 [Turn over Scr daitheoir Amh in Marcanna Athmharc LEATHANACH B N QUESTIONS CONTINUE ON PAGE 14 2663 1 10/4/06 ES 2 26/4/06 GG 1 12/3/06 GG A2Y1S6 (Leanann na ceisteanna ar an ch ad leathanach eile) 13 [Turn over[Turn over A2Y1S6 A2Y1S6 2663.03 A2Y1S6 2663 13 3 1 [Tiontaigh [ leathanach [Turn over[Tiontaigh anTurn over 6 (a) (i) Luaigh, i bhfocail, dl an fh rsa imtharraingtigh idir dh phoncmhais. Scr daitheoir Amh in Marcanna Athmharc _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [3] (ii) T foirmeacha matamaitici la at cos il lena ch ile ag na dl the f rsa do r imse imtharraingteach agus do r imse leictreach. Ach, t siad difri il lena ch ile ar roinnt d igheanna t bhachtacha. Luaigh ceann amh in de na difir seo. _____________________________________________________ __________________________________________________ [1] (b) T r l t bhachtach ag f rsa imtharraingteach chun fithis pl in ad agus satail t a mh ni . Cad an r l seo? ______________________________________________________ [1] (c) (i) I dtr dl Kepler ar ghluaisne phl in adach luaitear, don ch s simplithe d fhithis ciorclacha, go bhfuil tr imhse rothlaithe an phl in id ina fhithis thart ar an Ghrian cearnaithe coimhr ireach le ga na fithise ci baithe. Taispe in cad mar at an toradh seo ag teacht le dl an fh rsa imtharraingtigh. [4] A2Y1S6 2663.03 14 [Turn over (ii) Is 1.50 1011 m ga fhithis an Domhain thart ar an Ghrian. R omh mais an Gr ine. Mais na Gr ine = ________ kg A2Y1S6 2663.03 Scr daitheoir Amh in Marcanna Athmharc [3] 15 [Tiontaigh an leathanach 7 Ceist ar anail s sonra Scr daitheoir Amh in Marcanna Athmharc Cuireann an cheist seo le riachtanais mheas n sionoptach na Sonra ochta. Sa fhreagra agat, t thar ag s il go mbainfidh t s id as smaointe agus scileanna na fisice sna c sanna ar leith a gcuirtear s os orthu. Moltar duit tuairim is 35 n im ad a chaitheamh ar an cheist seo. Feidhmeanna oibre miotal (a) Beagnach n cha bliain shin rinne Robert Millikan turgnaimh chlaisiceacha a chuir cruth cainn ocht il ar f il do chothrom id ast f taileictreach Einstein (at luaite ar do Bhileog Sonra agus Foirml ). Soils odh dromchla glan miotail le solas monacr matach i bhfead n folmhaithe. M bh tonnfhad f irsteanach sa solas asta odh f taileictreoin. Nuair a th inig na leictreoin seo a fhad leis an leictreoid baili ch in agus nuair a d imigh siad thart ar an chiorcad, t irgeadh f tashruth intomhaiste I. Cuireadh poit inseal stoptha i bhfeidhm ar an leictreoid baili ch in sa d igh gur stopadh na f taileictreoin d reach sular th inig siad a fhad leis an tiomsaitheoir. Bh na saintr ithe tipici la sruth-voltais (I-V) cos il leo si d in F or 7.1. Fuarthas na saintr ithe seo nuair a soils odh an miotal le solas dar tonnfhad 546 nm agus 365 nm ceann i ndiaidh an chinn eile. 3 I/ A 2 1 2.0 1.5 1.0 = 365 nm = 546 nm 0.5 0 0.5 1.0 V /V F or 7.1 Fig. 7.1 A2Y1S6 2663.03 16 [Turn over (i) In F or 7.2 taispe ntar cuid de chiorcad a d fh adfa a s id chun an poit inseal stoptha a fh il agus a thomhas. tiomsaitheoir Scr daitheoir Amh in Marcanna Athmharc rada ocht dromchla glan miotail cuir siombail cadhnra anseo cuir lip ad cu ar an mh adar F or 7.2 Cuir isteach siombail cu chun an ciorcad a chomhl n . Ba ch ir go mbeadh roinnteoir poit insil sa chiorcad seo. D an cinnte de go dtaispe nann an tsiombail cadhnra an pholara ocht cheart chun an chuid poit inseal stoptha den tsaintr ith I-V a fh il. [4] (ii) An d shaintr ith in F or 7.1, taispe nann siad luachanna seasta den fh tashruth I, at difri il ina luach. Cad chuige, dar leat, a mbeadh an difr ocht seo ann? _____________________________________________________ _____________________________________________________ __________________________________________________ [1] A2Y1S6 2663.03 17 [Tiontaigh an leathanach (iii) I dturgnamh eile tomhaiseadh an poit inseal stoptha de r ir c ime is airde cruinnis n mar a tomhaiseadh sa turgnamh seo iad. In T bla 7.1 tugtar luachanna na bpoit inseal stoptha Vs a bh de dh th nuair a soils odh an miotal le solas dar tonnfhaid dhifri la . Scr daitheoir Amh in Marcanna Athmharc T bla 7.1 /nm Vs/V 365 1.430 436 0.875 496 0.530 546 0.300 hf/J (1) An luach 0.300 V den phoit inseal stoptha, c mh ad figi r bun sach at luaite ann? _______________________________________________ [1] (2) An chothrom id seo th os, taispe in gur foirmle le tonnfhaid i nm a thiont ina bhfuinnimh f t in hf i J hf (i J ) = 1.9 9 10 16 (i nm ) Cothrom id 7.1 [2] (3) Agus Cothrom id 7.1 in s id agat, tiontaigh na luachanna de in T bla 7.1 ina luachanna comhfhreagracha de hf. Cuir na luachanna seo sa tr col n sa T bla. [2] (iv) (1) T ort graf de Vs ar hf a bhreacadh ar an eangach in F or 7.3. Lip adaigh an ais chothrom nach, roghnaigh sc la cu , breac na luachanna T bla 7.1 agus tarraing an l ne dh reach is fearr tr na point . [5] A2Y1S6 2663.03 18 [Turn over Scr daitheoir Amh in Marcanna Athmharc 1.5 Vs /V 1.0 0.5 0 F or 7.3 (2) Faigh gr d n an ghraif. Luaigh aonad cu . Gr d n = ___________________ Aonad: ___________________ [4] (3) L igh an idirl ne ar an ais-hf. Idirl ne ar an ais-hf = ___________ J A2Y1S6 2663.03 19 [1] [Tiontaigh an leathanach (v) Is seo a leanas cothrom id fh taileictreach Einstein Scr daitheoir Amh in Marcanna Athmharc hf = hf0 + 1 22 mvmax ax 2 Cothrom id 7.2 12 + Seasann an t arma mvmax 2do uasfhuinneamh cin iteach an ax fh taileictreoin. 2 Tomhaistear an chainn ocht seo agus an poit inseal stoptha in s id, agus tugtar le 1 2 mvma2 2= eVs ax x 2 Cothrom id 7.3 (1) Agus tagairt d anamh agat do Chothrom id 7.2, m nigh cad mar is f idir feidhm oibre an mhiotail a fh il do ghraf. __________________________________________________ __________________________________________________ R omh a luach i leictreonvolta (eV). Feidhm oibre = ___________ eV [2] (2) Agus tagairt d anamh agat do Chothrom id 7.2 agus Chothrom id 7.3, luaigh cad mar at gaol idir an bunlucht e agus gr d n do ghraif. _______________________________________________ [1] A2Y1S6 2663.03 20 [Turn over (b) D igh eile le feidhm oibre miotail a thomhas is tr staid ar a dh anamh ar an ast teirmianach a thagann as. De r ir mar a ir onn teocht an mhiotail, b onn n os m leictreon n-ast as. An sruth astaithe teirmianach a thugtar ar an ast seo, agus is an sruth in aghaidh aonad-achar an mhiotail an sruthdhl s den ast teirmianach. Anseo th os t an chothrom id a thugann an sruthdhl s den ast teirmianach J ag teocht kelvin T. J = A0T 2e /kT Scr daitheoir Amh in Marcanna Athmharc Cothrom id 7.4 nuair is tairiseach A0 nuair is an fheidhm oibre agus nuair is k an tairiseach Boltzmann. Leis an fheidhm oibre a fh il, tomhaistear an sruthdhl s J ag l on de theochta T. (i) Le picti r simplithe d ast teirmianach a fh il samhla tear go mb onn na saorleictreoin sa mhiotal ag iompar ar an d igh ch anna leis an m il n de gh s id alach. An picti r seo agus coincheap feidhm oibre miotail in s id agat, luaigh cad chuige go mb onn n os m leictreon n-ast as an mhiotal de r ir mar a ir onn teocht an mhiotail. _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ __________________________________________________ [3] A2Y1S6 2663.03 21 [Tiontaigh an leathanach (ii) (1) Is at sa sruthdhl s astaithe J n an sruth in aghaidh aonad achar dromchla an asta re. Luaigh an t-aonad aige. Aonad: _________________________ Scr daitheoir Amh in Marcanna Athmharc [1] (2) Luaigh an t-aonad, m t aonad ar bith ann, den chainn ocht e /kT in Cothrom id 7.4. Aonad: _________________________ Uaidh sin faigh an t-aonad, m t aonad ar bith ann, den tairiseach A0. Aonad: _________________________ [2] (iii) F adtar modh grafach a s id chun an luach de a fh il thacar de luachanna J agus T. (1) F adtar Cothrom id 7.4 a athscr obh san fhoirm J /kT 2 = A0 e T Cothrom id 7.5 Glac logartaim n d rtha (logartaim go dt an bonn e) de dh thaobh na Cothrom ide 7.5. Cothrom id i bhfoirm logartamach: [1] A2Y1S6 2663.03 2663.03 22 [Turn over (2) Cuir do chothrom id in (b)(iii)(1) i gcompar id leis an fhoirm l neach chaighde nach y = mx + c agus uaidh sin luaigh na haiseanna a bheadh in s id agat le graf l neach a fh il na bhf adfa a fh il. y-ais (ceartingearach): __________________ x-ais (cothrom nach): __________________ (3) Ar F or 7.4 d an sceitse den ghraf a mbeife ag s il leis. [2] [1] F or 7.4 (4) Luaigh an d igh a mbeadh an graf in s id agat le luach a fh il. __________________________________________________ __________________________________________________ __________________________________________________ _______________________________________________ [2] SEO DEIREADH AN SCR DPH IP IR A2Y1S6 2663.03 23 Scr daitheoir Amh in Marcanna Athmharc

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Additional Info : Gce Physics June 2006 Assessment Unit A2 1, Module 4: Energy, Oscillations and Fields (Irish Medium)
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