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GCE JAN 2008 : AS 2 Waves and Photons (Irish Medium)

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Uimhir L rionaid 71 Uimhir Iarrth ra ADVANCED SUBSIDIARY (AS) General Certificate of Education January 2008 Fisic Aonad Meas naithe AS 2 ag meas n Mod l 2: Tonnta agus F t in [ASY21] D C ADAOIN 16 EAN IR, IARN IN AM 1 uair an chloig. 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 60 an marc ioml n don ph ip ar seo. Meas n far caighde n na cumars ide scr ofa i gceist 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. Don Scr daitheaoir amh in Uimhir Ceiste 1 2 3 4 5 6 7 Marc Ioml n ASY2W8 3961.03 Marcanna 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) T ann tonn taistil tr mhe n. Is graf F or 1.1 a thaispe nann cad mar at an d l ithri ch n s de ch ithn n ag pointe irithe sa mhe n ag athr le ham t. s A O B C D t F or 1.1 T na litreacha A, B, C agus D ar cheithre thomhas ar an ghraf. In T bla 1.1 t liosta de chainn ochta a bhaineann le tonn. T cuid de na cainn ochta seo n t siad uile cothrom leis na tomhais at l iri leis na litreacha in F or 1.1. T bla 1.1 Cainn ocht Litir Aimpliti id Minic ocht Tonnfhad Peiriad (i) Comhl naigh T bla 1.1 leis an litir chu A, B, C, D n N (a chialla onn neamhl irithe ). Mar shampla, m sh leann t go bhfuil an mhinic ocht cothrom le C, scr obh an litir C sa t bla. Mura dtig leat aon tomhas at cothrom leis an mhinic ocht a fh il ar an ghraf, scr obh an litir N. [2] ASY2W8 3961.03 2 [Turn over (ii) M d s id t an litir N le cainn ocht ar bith in T bla 1.1, taispe in go c ramach cad mar is f idir an chainn ocht sin a fh il na tomhais A, B, C n D in F or 1.1, chomh maith le haon sainmh ni n chothrom id a bhaineann l i. Scr obh do fhreagra sna sp sanna th os. s id an tsiombail v do luas na toinne tr d an mhe n. Is f idir nach mbeidh ort na sp sanna uile th os a s id. [4] Cainn ocht: ___________ Scr daitheoir Amh in Marcanna Athmharc Tomhas at de dh th: ___________ An d igh a bhfuarthas n tomhas : ______________________________________________________ ______________________________________________________ Cainn ocht: ___________ Tomhas at de dh th: ___________ An d igh a bhfuarthas n tomhas : ______________________________________________________ ______________________________________________________ Cainn ocht: ___________ Tomhas at de dh th: ___________ An d igh a bhfuarthas n tomhas : ______________________________________________________ ______________________________________________________ (b) B onn cainn ocht darb ainm an phasdifr ocht in s id le cur s os ar shu mh choibhneasta dh thonn n n os m . Luaigh luach na pasdifr ochta idir dh thonn at d reach as comhphas. Tabhair an t-aonad ina bhfuil an luach seo luaite agat. Pasdifr ocht = ___________________ Aonad: ___________________ ASY2W8 3961.03 [2] 3 [Tiontaigh an leathanach 2 (a) (i) Buaileann ga solais in aer dromchla me in dar comh ifeacht athraonta n ar uillinn ionsaithe i. Scr obh an chothrom id a cheangla onn n, i agus an uillinn athraonta r. Scr daitheoir Amh in Marcanna Athmharc ___________________________________________________ [1] (ii) Luaigh an d choinn oll a chaithfidh a bheith i bhfeidhm m t ga solais, ionsaitheach ar an fh ir idir dh mhe n, le frithchaitheamh ina ioml ine go hinmhe nach. Coinn oll 1: ___________________________________________ ______________________________________________________ Coinn oll 2: ___________________________________________ ___________________________________________________ [2] (b) Taispe nann F or 2.1 priosma a rinneadh as gloine dar comh ifeacht athraonta 1.52. T gach uillinn sa phriosma cothrom le 60.0 . Buaileann ga solais aghaidh AB ag pointe P ar uillinn ionsaitheach de 45.0 . I ndiaidh athraonta ag P, trasna onn an ga an priosma go Q mar a n-athraontar amach as an phriosma . A 60 45 Q P i r 60 60 B C F or 2.1 (i) R omh uillinn athraonta r an gha i ndiaidh d dul isteach sa phriosma ag P. Uillinn athraonta = _____________ ASY2W8 3961.03 4 [2] [Turn over (ii) Trasna onn an ga athraonta an priosma, ag bualadh aghaidh AC ag Q. R omh uillinn ionsaitheach i an gha seo ar aghaidh AC. Leid: uillinn r + uillinn i = uillinn an phriosma. Uillinn i = _____________ Scr daitheoir Amh in Marcanna Athmharc [1] (iii) In (a)(ii) luaigh t dh choinn oll le go mbeidh frithchaitheamh ioml n inmhe nach ann. Taispe in nach s sa tear ceann amh in de na coinn ollacha seo nuair a bhuaileann an ga aghaidh AC, sa d igh go dtagann an ga amach as an phriosma. Taispe in do chuid oibre go soil ir. [2] (iv) R omh uillinn u leis an normal mar a bhfuil an ga ag teacht amach as an phriosma. u = _____________ ASY2W8 3961.03 [2] 5 [Tiontaigh an leathanach 3 (a) (i) Luann do Bhileog Sonra agus Foirml cothrom id an lionsa Scr daitheoir Amh in Marcanna Athmharc 1/u + 1/v = 1/f Sa chothrom id seo, cad d a seasann na siombail u agus v? u: ____________________________________________________ v: ____________________________________________________ C n cine l lionsa ag a mbeadh luach di ltach de f ? ___________________________________________________ [2] (ii) Cuir s os go hachomair ar an d igh a nd anf idirdheal praitici il idir f or omh agus omh fh or il. ______________________________________________________ ___________________________________________________ [1] (b) Is at in F or 3.1 n tacar aiseanna at lip adaithe 1/u agus 1/v faoi seach. T an sc la don ais 1/v mar an gc anna leis an sc la don ais 1/u. 1/v 0 0 1/u F or 3.1 Ar na haiseanna in F or 3.1, tarraing graf 1/v ar 1/u do lionsa coinbh irseach. Cuir s os ar an d igh ar f idir luach beacht do fhad f casach an lionsa a dh anamh amach n ghraf seo. _________________________________________________________ _________________________________________________________ _______________________________________________________ [3] ASY2W8 3961.03 6 [Turn over (c) Coinn onn bailitheoir stampa lionsa dar fad f casach +20.0 cm fad 12.5 cm ar shi l stampa postais leis an litreoireacht a ini chadh. Scr daitheoir Amh in Marcanna Athmharc Faigh luach uimhri il fhormh ad l neach an lionsa nuair a bh onn s s id ar an d igh seo. Formh ad : ______________________ ASY2W8 3961.03 7 [4] [Tiontaigh an leathanach I gcuid (b) den cheist seo ba ch ir duit do fhreagra a scr obh i bpr s lean nach. Meas n far th ar chaighde n na cumars ide scr ofa. 4 Scr daitheoir Amh in Marcanna Athmharc (a) Iarradh ar mhac l inn prionsabal an fhorshu mh a lua. Seo an freagra a thug s : Nuair a thagann dh thonn le ch ile, is an aimpliti id chomhthoraidh n suim ailg abrach (n veicteoireach) a n-aimpliti id leithleacha. (i) Mheasc an mac l inn aimpliti d le cainn ocht eile a bhaineann le tonnta. C n chainn ocht ? ___________________________________________________ [1] (ii) Cib ar bith, n l s ceart bheith ag labhairt ar shuim ailg abrach (n veicteoireach) dh aimpliti id. Cad chuige? ___________________________________________________ [1] ASY2W8 3961.03 8 [Turn over (b) D s id mac l inn c iri ch n scoilt n Young le taispe ntas ar thrasna ocht a chur i dtreoir. Taobh thiar de gach scoilt n, d s id s lampa filim id leithleacha, a raibh scagaire daite acu, le solas monacr matach a fh il. Ach bh d om air, fach, nuair nach bhf adfadh s aon rian de phatr n trasna ochta a fheice il ar an sc ile n. Rinne s turgnamh den chine l ch anna le fuaim ansin. D s id s dh challaire leithleacha mar fhoins , agus an sol thar minic ochta inathraithe c anna ceangailte leo, agus micreaf n mar bhrathad ir. Bh s s sta nuair a d irigh leis an taispe ntas seo. Scr daitheoir Amh in Marcanna Athmharc M nigh cad chuige n r irigh leis an taispe ntas solais nuair a d irigh leis an cheann fuaime. C n d igh, dar leat, a n-athr fa an turgnamh solais le go bhfaighf patr n infheicthe trasna ochta? _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _________________________________________________________ _______________________________________________________ [3] Caighde n na cumars ide scr ofa ASY2W8 3961.03 [1] 9 [Tiontaigh an leathanach (c) (i) I dtaispe ntas saotharlainne ar thurgnamh scoilt n Young le solas l asar h iliam neon (tonnfhad 6.33 10 7 m), b tear ag s il le deighilt frainse de 12 mm a fh il. Tabhair luachanna f irsteanacha do na cainn ochta seo a leanas sa taispe ntas seo. Taispe in go soil ir cib r omhaireachta a dh anann t . Scr daitheoir Amh in Marcanna Athmharc 1. Fad scoilt n sc ile n: ____________ m 2. Deighilt scoilt n: ____________ mm [4] (ii) Luaigh r amhch ram s bh ilteachta at le d anamh agus an taispe ntas in (c)(i) ar bun. ___________________________________________________ [1] ASY2W8 3961.03 10 [Turn over 5 (a) Buaileann solas l asair dar tonnfhad 6.33 10 7 m gr l d raonta go normalach, mar a thaispe ntar in F or 5.1. Scr daitheoir Amh in Marcanna Athmharc c ad ord first order incident light solas ionsaitheach zero nialais ord order c ad ord first order grating gr l F or 5.1 Is 33.1 an uillinn idir treonna d raonta an ch ad d ord. (i) Taispe in go bhfuil 4500 l ne in aghaidh an cheintim adair ag an ghr l. [3] (ii) Faigh l on na n-ord ar thaobh amh in de threo an oird nialais is f idir a fheice il. L on na n-ord = _______________ [3] (b) T pl na adamh a bhfuil sp s rialta eatarthu i gcriostail. Go luath san fhichi haois cuireadh an bhar il chun tosaigh go mbeadh na pl na seo ag feidhmi ar n s na l nte i ngr l d raonta, sa d igh go mbeadh rada ocht leictreamaighn adach scaipeadh go l idir i dtreonna irithe. Ach, nuair a bh onn solas infheicthe dh ri ar chriostal tr scaoilteach, n bh onn aon phatr in d oird d raonta, amhail iad si d a fhaightear le gr l saotharlainne, le feice il. M nigh seo. _________________________________________________________ _________________________________________________________ _______________________________________________________ [2] ASY2W8 3961.03 11 [Tiontaigh an leathanach 6 (a) Is is feidhm oibre miotail n an fuinneamh a bh onn de dh th le leictreon a bhaint ar shi l dhromchla miotail. Scr daitheoir Amh in Marcanna Athmharc (i) Cad chuige, dar leat, a mb onn fuinneamh de dh th le leictreon a bhaint ar shi l mhiotal? ______________________________________________________ ______________________________________________________ ___________________________________________________ [1] (ii) In ast ch n f taileictreach is f t n a shol thra onn an fuinneamh a bh onn de dh th leis an leictreon a bhaint ar shi l. Cad is f t n ann? ______________________________________________________ ______________________________________________________ ___________________________________________________ [2] (b) T an chothrom id don iarmhairt f taileictreach ar do Bhileog Sonra agus Foirml 1 2 mv 2 = hf hf0 max (i) Cad d a seasann na cainn ochta seo a leanas: 1 2 mv 2 ________________________________________________ max hf ____________________________________________________ f0 __________________________________________________ [2] ASY2W8 3961.03 12 [Turn over 1 (ii) In F or 6.1 th os t lip id 2 mv 2 agus minic ocht ar thacar max aiseanna. 1 2 Scr daitheoir Amh in Marcanna Athmharc mv 2 max 0 0 frequency minic ocht F or 6.1 Ar F or 6.1 tarraing graf a thaispe nfaidh cad mar at 1 2 2 mv max ag brath ar mhinic ocht le haghaidh ast ch in f taileictrigh mhiotal. Luaigh an d igh a n- s idfe an graf leis na cainn ochta seo a leanas a fh il: Tairiseach Planck Feidhm oibre an mhiotail ___________________________________________________ [3] ASY2W8 3961.03 13 [Tiontaigh an leathanach 7 (a) Cuireann feinim in fhisiceacha irithe in i l go mb onn solas ag iompar mar thonn, ach cuireann feinim in eile in i l gur mar shruth c ithn n a bh onn s ag iompar. Le feinim an irithe a thuiscint, caithfear ceachtar acu id na toinne n id an ch ithn n a s id, ach n an d cheann acu. Scr daitheoir Amh in Marcanna Athmharc In T bla 7.1 tugtar liosta d fheinim in irithe a bhaineann le solas. T bla 7.1 Feinim an M ni na toinne M ni an ch ithn n D raonadh Fluaraiseacht L nespeictrim Polar ch n Leis an T bla a chomhl n cuir tic leis an chol n chu lena thaispe int c acu tr d an chur chuige toinne n an chur chuige c ithn n a s id is fearr a thuigtear an feinim an. [2] (b) T air onna ar n s toinne ag leictreoin ghluaisteacha. An tonnfhad de Broglie a thugtar ar thonnfhad leictreoin at ag gluaiseacht. (i) Taispe in gurb 6.6 10 24 kg m s 1 m iminteam leictreoin a luasgh ara odh fhos tr dhifr ocht phoit insil de 150 V. [2] (ii) R omh tonnfhad de Broglie an leictreoin in (b) (i). Tonnfhad = ________________ m ASY2W8 3961.03 14 [1] [Turn over SEO DEIREADH AN SCR DPH IP IR S 9/07 302-072-1

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Additional Info : Gce Physics January 2008 Assessment Unit AS 2, Module 2: Waves and Photons (Irish Medium)
Tags : General Certificate of Education, A Level and AS Level, uk, council for the curriculum examinations and assessment, gce exam papers, gce a level and as level exam papers , gce past questions and answer, gce past question papers, ccea gce past papers, gce ccea past papers

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