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GCE MAY 2008 : A2 2 Electromagnetism and Nuclear Physics (Irish Medium)

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Uimhir L rionaid 71 Uimhir Iarrth ra ADVANCED General Certificate of Education 2008 Fisic Aonad Meas naithe A2 2 ag meas n Mod l 5: Leictreamaighn adas agus Fisic N icl ach [A2Y21] D ARDAOIN 29 BEALTAINE, 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 s cheist. 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 gceist 5(b)(ii). 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 6 le riachtanas mheas n sionoptach na Sonra ochta. Moltar duit tuairim is 45 n im ad a chaitheamh ar cheisteanna 1 5, agus tuairim is 45 n im ad ar cheist 6. 4666.03 Don Scr daitheoir amh in Uimhir Marcanna Ceiste 1 2 3 4 5 6 Marc Ioml n 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 s cheist 1 T toilleoir neamhluchtaithe T1 dar toilleas 200 F sraithcheangailte le friot ir F dar luach 470 k , le cill 1.50 V agus le lasc L mar a thaispe ntar in F or 1.1. F T1 L 1.5 V F or 1.1 Druidtear an lasc agus luchta tear an toilleoir. (a) (i) Ar F or 1.2 sceitse il graf a thaispe nfaidh comhathr an fhuinnimh F st r ilte sa toilleoir le voltas V de r ir mar at an toilleoir lucht . F 0 0 V F or 1.2 [1] (ii) R omh an fuinneamh Fuasta st r ilte sa toilleoir l nluchtaithe. Fuasta = ____________ J 4666.03 [2] 2 [Turn over (b) Oscla tear an lasc L agus ansin ceangla tear an dara toilleoir T2 neamhluchtaithe dar luach 400 F mar a thaispe ntar in F or 1.3. Scr daitheoir Amh in Marcanna Athmharc T2 F T1 L 1.5 V F or 1.3 (i) R omh an voltas trasna ar an teaglaim de thoilleoir i ndiaidh a gceangailte agus an lasc oscailte go f ill. Voltas = ___________________ V [3] (ii) R omh an fuinneamh ioml n st r ilte sa teaglaim de thoilleoir . Fuinneamh ioml n st r ilte = _____________ J 4666.03 3 [2] [Tiontaigh an leathanach (c) Ba ch ir go dtaispe nfadh na freagra ar (a)(ii) agus (b)(ii) go bhfuil an fuinneamh st r ilte sa teaglaim de thoilleoir m r n n os l n an fuinneamh a bh st r ilte ag an t s in T1 leis f in. M nigh an difr ocht seo i bhfuinneamh. Scr daitheoir Amh in Marcanna Athmharc __________________________________________________________ __________________________________________________________ _______________________________________________________ [2] 4666.03 4 [Turn over LEATHANACH B N (Leanann na ceisteanna ar an ch ad leathanach eile) 4666.03 5 [Tiontaigh an leathanach 2 (a) Luaigh dl Faraday ar ionducht leictreamaighn adach. Scr daitheoir Amh in Marcanna Athmharc __________________________________________________________ __________________________________________________________ _______________________________________________________ [2] (b) Bealach amh in chun ceol taifeadta a st r il, sula raibh aon iomr ar DD agus chais id, ab ea na sonra a ionchlann in eitre chaol lean nach ar dhromchla ceirn n vinile chiorclaigh. T r chairt ar s ar an mhodh seo. Cuirtear an ceirn n ar chaschl r a rothla tear faoi threoluas uilleach tairiseach. Ansin cuirtear st leas n sn thaid san eitre agus tugann athr ch in ar thaobhanna na heitre ar an tsn thaid agus ar an chorna at nasctha l i ascal i dtreo cothrom nach i r imse maighn adach arna shol thar ag buanmhaighn ad. Mar thoradh air seo, ionduchta tear f.m.g. sa chorna. In F or 2.1 taispe ntar bonnamharc simplithe den ch iri ch n seo. corna T D maighdeog st leas treo an ascalaithe F or 2.1 Bonnamharc 4666.03 6 [Turn over In F or 2.2 taispe ntar athr ch n shu omh uilleach an chorna le ham t de r ir mar a riana onn an st leas tr chuid den eitre. Scr daitheoir Amh in Marcanna Athmharc / 0.18 0.12 0.06 0 1.0 2.0 t/ms 0.06 0.12 0.18 F or 2.2 M nigh c n f th a gcrutha onn gluaisne an st lis f.m.g. __________________________________________________________ __________________________________________________________ _______________________________________________________ [1] (c) Ionduchta tear an f.m.g. uasta sa chorna ag na hamanna marc ilte A (.i. 0, 1.0 ms agus 2.0 ms) in F or 2.2. (i) n ghraf in F or 2.2 m nigh go hachomair c n f th gur m an f.m.g. ionduchtaithe ag na hamanna seo. ______________________________________________________ ______________________________________________________ ____________________________________________________ [2] 4666.03 7 [Tiontaigh an leathanach (ii) Is 600 c im sa soicind m id ghr d n an tadhla don chuar in F or 2.2 ag na hamanna marc ilte A. Is seo m id threoluas uilleach an chorna ag na hamanna marc ilte A. Scr daitheoir Amh in Marcanna Athmharc Taispe in go bhfuil an treoluas uilleach de 600 c im sa soicind cothrom le treoluas uilleach de 10.5 raidian sa soicind. ____________ [1] (iii) Maidir le m id an f.m.g. EA a ghineann an corna ag na hamanna marc ilte A, is f idir a thaispe int go dtugtar ag EA = BAn A Cothrom id 2.1 it arb B an floscdhl s maighn adach idir polph osa an mhaighn id, arb A achar an chorna, arb n an l on l b sa chorna agus arb A m id threoluas uilleach an chorna ag na hamanna marc ilte A. Is 14 mT an floscdhl s maighn adach idir polph osa an mhaighn id. T 8 l b sa chorna darb achar 20 mm2. Agus Cothrom id 2.1 in s id, r omh m id an f.m.g. EA a ghineann an corna ag na hamanna marc ilte A. F.m.g. EA = ____________________ V 4666.03 8 [2] [Turn over LEATHANACH B N (Leanann na ceisteanna ar an ch ad leathanach eile) 4666.03 9 [Tiontaigh an leathanach 3 Is gl as an mais-speicteagraf a s ideann prionsabal shraonadh na gc ithn n luchtaithe i r imse maighn adach. In F or 3.1 taispe ntar bonnamharc de mhais-speicteagraf. Iontr lann l as ian dar lucht +q agus dar mais m, agus ag taisteal faoi luas tairiseach v, r imse maighn adach aonfhoirmeach de fhloscdhl s B at i bhfeidhm feadh an limist ir sc thaithe at easlonnaithe. Ar theacht amach as an scoilt n don l as, gluaiseann s i gconair leathchiorclach agus f gann lorg ar an phl ta ghrianghrafach. L as iain deimhneach Scr daitheoir Amh in Marcanna Athmharc Pl ta grianghrafach Scoilt n R imse maighn adach F or 3.1 (a) (i) Ainmnigh an riail a d s idfe lena fh il amach c n treo a gcaithfear an r imse maighn adach a fheidhmi le go ngluaisfidh na hiain mar at l irithe. ____________________________________________________ [1] (ii) C n treo a gcaithfear an r imse maighn adach a fheidhm chun an sraonadh a thaispe ntar in F or 3.1 a thabhairt? Comhthreomhar leis an leathanach Isteach sa leathanach Amach as an leathanach Cuir 4666.03 sa bhosca dar treo ceart, dar leat. 10 [1] [Turn over (iii) M nigh c n f th gur leathchiorclach conair na n-ian sa r imse maighn adach. Scr daitheoir Amh in Marcanna Athmharc ______________________________________________________ ______________________________________________________ ____________________________________________________ [2] (b) Faigh slonn i dt arma B, q, m agus v do gha r an leathchiorcail a leanann na hiain. r = ________________ [2] (c) Is sainlucht iain n c imheas lucht an iain le mais an iain. R omh ga na conaire leathchiorcla m s sainlucht na n-ian +5.0 108 C kg 1 agus iad ag gluaiseacht faoi luas de 4.5 105 m s 1. Is 2.3 10 3 T luach B. Ga = _________ cm [2] (d) Ar F or 3.1 sceitse il an chonair lena mbeife ag s il d m ad fa ar luas na n-ian. Lip adaigh seo conair 2. [1] 4666.03 11 [Tiontaigh an leathanach 4 In F or 4.1 taispe ntar c iri ch n chun imscr d a dh anamh ar chumhacht thre iteach cine lacha difri la rada ochta. Cuirtear foinse radaighn omhach ag P agus cuirtear leath in d bhair dhifri la gar don fhoinse. Cuirtear brathad ir rada ochta in aghaidh an bhair. T gach bearna aeir neamhshuntasach. Scr daitheoir Amh in Marcanna Athmharc bhar P foinse radaighn omhach brathad ir rada ochta F or 4.1 Gan an fhoinse i l thair, t r ta irimh an bhrathad ra an-bheag, mar r ta irimh c lrach Rb. Sa t bla th os t achoimre ar thortha de shraith turgnamh leis an fhoinse i l thair. Turgnamh bhar ag A R ta irimh 1 Gan bhar ar bith R1 an it a bhfuil R1>>Rb 2 Cairtchl r tana R2 an it a bhfuil R1>>R2>>Rb 3 Leath n d al manam dar ti s Rud beag n os l n R2 10 mm (Cialla onn an tsiombail >> i bhfad n os m n .) (a) Oibrigh amach an cine l n na cine lacha rada ochta a asta odh n fhoinse. M nigh an f th at le do fhreagra. __________________________________________________________ __________________________________________________________ __________________________________________________________ __________________________________________________________ _______________________________________________________ [4] 4666.03 12 [Turn over 0 (b) Is asta re c ithn n alpha an n icl d 2833 Bi. thomhas tosaigh de ghn omha ocht shampla den iseat p seo tugtar r ta irimh de 1200 ireamh s 1. I ndiaidh eatramh de 24 uair an chloig titeann an r ta irimh go 290 ireamh s 1. T an d l amh seo ceartaithe le haghaidh rada ochta c lra . Scr daitheoir Amh in Marcanna Athmharc 0 (i) Taispe in go bhfuil an meath-thairiseach de 2833 Bi thart ar 1.6 10 5 s 1. [2] (ii) R omh leathr na n icl de seo. Leathr = _____________ uair [1] 0 (iii) R omh an uimhir N de 2833 Bi n icl as sa sampla nuair ba 1200 s 1 an r ta irimh. N = __________________ 4666.03 [2] 13 [Tiontaigh an leathanach I gcuid (b)(ii) 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. 5 Scr daitheoir Amh in Marcanna Athmharc (a) M nigh cad a chialla onn an fuinneamh nascach n icl ach de n icl as. __________________________________________________________ _______________________________________________________ [2] (b) (i) Ar na haiseanna in F or 5.1 sceitse il graf a thaispeanfaidh an d igh a bhfuil an fuinneamh nascach sa n icl n ag brath ar mhaisuimhir an n icl is. 12 Fuinneamh nascach 8 sa n icl n/ MeV sa n icl n 4 0 0 50 100 150 200 250 Maisuimhir F or 5.1 [2] (ii) n ghraf a tharraing t in F or 5.1, m nigh c n f th ar f idir go scaoiltear fuinneamh in imoibrithe eamhnacha. ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ______________________________________________________ ____________________________________________________ [3] Caighde n na cumars ide scr ofa 4666.03 [2] 14 [Turn over LEATHANACH B N (Leanann na ceisteanna ar an ch ad leathanach eile) 4666.03 15 [Tiontaigh an leathanach 6 Ceist tuisceana Cuireann an cheist seo le riachtanas mheas n sionoptach na Sonra ochta. Sa fhreagra agat, t thar ag s il go dt gfaidh t le ch ile agus go gcuirfidh t i bhfeidhm iad, prionsabail agus comhth acsanna r ims eile na fisice, agus 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 45 n im ad a chaitheamh ar an cheist seo. L igh an sliocht go c ramach agus freagair na ceisteanna a leanann. Diamaint fhoircneacha Is strucht r an-l idir diamant toisc go bhfuil gach ceann de na hadaimh charb in nasctha le ceithre cinn eile. F adann criostail eile an strucht r c anna a l iri , sileacan mar shampla, at sa ghr pa ch anna sa t bla peiriadach. Is iad an strucht r at ag diamant agus neart na nasc a fh gann chomh crua sin . Is graif t, i nd ir re, seachas diamant, foirm chobhsa carb in ag br atmaisf arach. 1 5 Caighde n diamaint Cuireann c ig air caighde n diamaint in i l d inn: dath, cruas, carat, soil ire agus gearradh. Dath N l gach diamant adathach. Tarla onn dath mar gheall ar shalachar sa chriostal. B onn 10 dath bu ar dhiamant mar gheall ar an-chuid salachar n trig ne a bheith ann. D antar dath diamant tr dhearcach a r t il ar sc la bh n oighreata (an ceann is airde) go bu adrom (an ceann is sle). S leann muid gur ruda adathacha iad diamaint t na cinn dhathacha, na cinn dhearga go h irithe, gann. Cruas Sainmh n tear bhar crua mar bhar nach f idir scr obadh n eang go furasta. T ann sc la cruais Mohs thalc ag 1 (an ceann is boige) suas go diamant ag 10 (an ceann is crua). Scr obfaidh aon mhianra ar bith gach ceann acu si d at faoina bhun n cothrom leis agus n scr obfaidh siad aon cheann os a chionn. 15 Carat Tomhaistear mais diamaint ina carait. T carat amh in (1ct) = 200.0 milleagram. 20 Soil ire Cuireann leibh il soil ire in i l m t aon fhabht sa diamant. Is an fabht is coitianta n substaint choimhth och shofheicthe, n locht, taobh istigh den diamant, ar a dtugtar iniamh. D ta onn na lochtanna n d rtha seo aniar n am ar foirm odh an chloch. 25 Gearradh T s an athraonta ard ag diamant, a fh gann gur f idir diamaint a ghearradh chun an solas a fhrithchaitheamh agus chun drithli n os m n geamanna eile. T tr cheathr de na diamaint a dh oltar inniu cruinnghearrtha niamhrach chun oiread solais agus is f idir a fhrithchaitheamh amach as an aghaidh thosaigh. Taispe ntar seo in F or 6.1. 30 4666.03 16 [Turn over i1 i2 F or 6.1 Diamant cruinnghearrtha niamhrach Amach anseo T air suimi il eile ag diamant. M chuireann t do l mh ar dhiamant motha onn s fuar, cos il le miotal. Seoltar an teas go gasta ar shi l do l mh. F gann seo gur f idir a s id i gc sanna a n- ireoidh an timpeallacht an-te agus is f idir an diamant a s id chun an teas a sheoladh ar shi l go gasta gan aon dam iste a dh anamh. C bhfuil an t-air seo de dh th? Sa ch ad ghl in eile de mhicreaphr ise laithe. Ritheann micreaphr ise laithe gasta an lae inniu ag 200 C. Le dul n os gasta bheadh teochta is airde ar s i gceist, agus n feidir le d ant s ir dul m r n n os airde. D n- s idf sliseoga diamaint seachas micrishliseanna sileacain, d fh adfa teochta i bhfad n os airde a s id agus d fh adfa teas a sheoladh ar shi l i bhfad ireann n os gasta. Amach anseo, seans go mbeidh pr ise laithe diamaint in s id againn a rithfidh faoi luasanna a th adh suas agus a le fadh sliseanna sileacain an lae inniu. T deacracht eile ann. Is inslitheoir leictreachais an chuid is m de dhiamaint. De r ir n d ir is iad na diamaint ghormliatha chorra amh in at balta leictreachas a sheoladh mar gheall ar shalachar sa chriostal. Le go mbeidh diamaint eile in ann leictreachas a sheoladh, teasta onn d igh chun adaimh neamhcharb in a ionchlann i ndiamaint. 35 40 45 Scr daitheoir Amh in Marcanna Athmharc (a) Scr obh c pla focal, n abairt ghearr, chun m ni a thabhairt ar na focail n na habairt seo a leanas de r ir mar a s idtear sa sliocht iad. (i) strucht r (l ne 3), ______________________________________________________ ____________________________________________________ [1] (ii) adathach (l ne 10), ______________________________________________________ ____________________________________________________ [1] (iii) cruas (l ne 17), ______________________________________________________ ___________________________________________________ [1] 4666.03 17 [Tiontaigh an leathanach (iv) soil ire (l ne 23), Scr daitheoir Amh in Marcanna Athmharc ______________________________________________________ ___________________________________________________ [1] (v) iniamh (l ne 25), ______________________________________________________ ___________________________________________________ [1] (vi) s an athraonta (l ne 27), ______________________________________________________ ___________________________________________________ [1] (vii) seol (l nte 33, 35), ______________________________________________________ ___________________________________________________ [1] (viii) micreaphr ise la (l ne 37), ______________________________________________________ ___________________________________________________ [1] (ix) gasta (l ne 37), ______________________________________________________ ___________________________________________________ [2] (x) sliseoga (l ne 39), ______________________________________________________ ___________________________________________________ [1] (xi) inslitheoir leictreachais (l ne 44). ______________________________________________________ ___________________________________________________ [1] 4666.03 18 [Turn over (b) Is 2.42 s an athraonta diamaint. Scr daitheoir Amh in Marcanna Athmharc (i) R omh luas solais i ndiamant. Luas solais i ndiamant = _______________m s 1 [2] (ii) R omh an uillinn chritici il le haghaidh diamaint. Uillinn chritici il = _________ [2] (iii) In F or 6.1 taispe ntar an d igh le diamant a ghearradh le go nd antar solas a fhrithchaitheamh chuig an aghaidh thosaigh. M nigh an d igh a dtarla onn seo. ______________________________________________________ ____________________________________________________ [2] (iv) Is 1.52 an s an athraonta at ag gloine fuinneoige. M nigh c n f th gur m solais a fhrithchaitheann diamant dar cruinnghearradh niamhrach n cruinnghearradh niamhrach comhchos il de ghloine fuinneoige. ______________________________________________________ ______________________________________________________ ____________________________________________________ [3] (v) D igh amh in chun s an athraonta diamaint a thomhas is ea roinnt criostal beag a thumadh in ola dar s an athraonta is airde n diamant ag teochta an tseomra. T s an athraonta na hola seo ag teochta difri la ar eolas. D antar an ola a th amh go r idh go dt nach l ir na criostail diamaint a thuilleadh. Luaigh c n f th a dtarl dh seo. ______________________________________________________ ______________________________________________________ 4666.03 ____________________________________________________ [3] 19 [Tiontaigh an leathanach (c) Maidir le leictreon d adamh n trigine at ceaptha i gcriostal de dhiamant, d fh adfadh s f t n solais a ions agus a bheith flosctha. Thitfeadh s siar ansin chuig leibh al fuinnimh is sle agus f t n a ast comhfhreagrach do dhifr ocht leibh al fuinnimh don adamh n trigine. T s seo i r igi n bu an speictrim leictreamaighn adaigh. Is diamant bu an toradh at air seo. Scr daitheoir Amh in Marcanna Athmharc (i) Is 575 nm tonnfhad an tsolais bhu . R omh ina eV fuinneamh an fh t in a asta tear ag an adamh n trigine. Fuinneamh f t in = ___________ eV [4] (ii) Tarla onn diamant gorm toisc an t-eis ontas b r n a bheith i l thair. M nigh c n f th a dtugtar gorm ar an diamant. ______________________________________________________ ____________________________________________________ [2] (d) (i) Ba san Afraic Theas in 1905 a th ngthas ar an diamant is airde geam-ch il ocht riamh agus diamant Cullinan a tugadh air. Bh mais de 3106 carat ann sular gearradh . R omh, ina graim, mais dhiamant Cullinan. Scr obh do fhreagra ceart go dt l on cu d fhigi ir bun sacha. Mais = _______________ g [3] (ii) Is 3.515 g cm 3 dl s diamaint. R omh toirt dhiamant Cullinan. Toirt = 4666.03 cm3 [3] 20 [Turn over (iii) Gearradh diamant Cullinan ina 105 geam. T mais de 530 carat ag R alta M r na hAfraice, an ceann is m acu, agus t s mar chuid de Na Seoda. C n c atad n de dhiamant bunaidh Cullinan R alta M r na hAfraice? C atad n = __________________ % [2] (e) Is 503 J kg 1 C 1 saintoilleadh teasa diamaint. R omh an teas a bh onn de dh th chun teocht diamaint dar mais 20.0 mg a ard theocht an tseomra de 20.0 C chuig a teocht le phointe de 3550 C. Teas a bh onn de dh th = ___________________ J [4] (f) Agus ina staid amh, n d ol suntais ar bith cuma diamaint. T cuma mhurtallach, sheanchaite ar dhiamaint den chine l seo. Chun an illeacht at i bhfolach sa diamant garbh a thabhairt chun solais n m r an dromchla murtallach a bhaint ar shi l. (i) C n t- bhar a s idtear chun an dromchla murtallach a bhaint de dhiamant agus ina staid amh? ____________________________________________________ [1] (ii) M nigh c n f th a bhfuil an t- bhar seo oiri nach. ______________________________________________________ ______________________________________________________ ____________________________________________________ [2] SEO DEIREADH AN SCR DPH IP IR 4666.03 21 Scr daitheoir Amh in Marcanna Athmharc 530-056-1

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Additional Info : Gce Physics May 2008 Assessment Unit A2 2, Module 5: Electromagnetism and Nuclear Physics (Irish Medium)
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