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GCE JAN 2009 : AS 2 Waves, Photons and Medical Physics - Revised (Irish-Medium)

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So nr N a o ua ch t Uimhir L rionaid 71 Uimhir Iarrth ra ADVANCED SUBSIDIARY General Certificate of Education January 2009 Fisic Aonad Meas naithe AS 2 ag meas n Mod l 2: Tonnta, F t in agus Fisic Mh ochaine [AY121] D C ADAOIN 28 EAN IR, 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 na ceisteanna uile. Scr obh do fhreagra sna sp sanna chuige sin sa cheistph ip ar seo. Don Scr daitheoir amh in EOLAS D IARRTH IR Is 75 an marc ioml n don ph ip ar seo. Meas n far caighde n na cumars ide scr ofa i gceist 5. 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. Uimhir Marcanna Ceiste 1 2 3 4 5 6 7 Marc Ioml n 4877.03 1 (a) (i) Is f idir tonnta a chatag iri mar fhadtonnta n thrastonnta. Comhl naigh T bla 1.1 lena thaispe int cad catag ir na dtonnta at liostaithe agus cad tonnfhad tipici il gach ceann de na tonnta. Scr daitheoir Amh in Marcanna Athmharc T bla 1.1 Tonn Catag ir Toinne Tonnfhad tipici il/m Radathonnta Tonnta solais infheicthe [2] (ii) Is 340 m s 1 luas fuaimthonnta in aer. I gc s seandaoine is f idir glacadh leis gur idir 40 Hz agus 12 kHz at closraon minic ochta a n- isteachta. 1. Luaigh catag ir na dtonnta at l iri ag fuaimthonnta. Catag ir = _________________ [1] 2. R omh uas-tonnfhad na fuaimthoinne sa chlosraon seo. Uas-tonnfhad = __________ m [2] (iii) Asta onn gabhl g thi nta fuaimthonn lean nach in aer. Ar F or 1.1 anseo th os, sceitse il graf a thaispe nfaidh d l ithri ch n d c ithn n aeir ar an fhad x n ghabhl g thi nta do dh chiogal ar a laghad den fhuaim on a asta tear. Lip adaigh na haiseanna ar an ghraf agus marc il go beacht aimpliti id a agus tonnfhad na toinne. [3] F or 1.1 4877.03 2 [Turn over (b) T tonn dar minic ocht 50.0 Hz ag taisteal feadh sreang in sh nte faoi 40.0 m s 1. R omh an phasdifr ocht idir dh phointe ar an sreang n at 0.30 m ar shi l na ch ile. Pasdifr ocht = __________ 4877.03 Scr daitheoir Amh in Marcanna Athmharc [4] 3 [Tiontaigh an leathanach 2 (a) (i) T ga solais ionsaitheach ar thaobh amh in de bhloc gloine dronuilleogach mar a thaispe ntar in F or 2.1. Ar F or 2.1, sceitse il conair an gha sholais tr d an bhloc gloine agus taispe in cad mar a thagann s amach as an taobh urchomhaireach. Lip adaigh go soil ir an uillinn ionsaithe i agus an uillinn athraonta r, mar a dt ann an ga isteach sa bhloc gloine. Scr daitheoir Amh in Marcanna Athmharc [3] F or 2.1 (ii) Glac leis go ndearnadh turgnamh le r imse luachanna d uillinneacha ionsaithe agus de na huillinneacha athraonta comhfhreagracha a chur ar f il. M nigh an d igh ar f idir na tortha seo a s id le comh ifeacht athraonta na gloine a fh il tr mhodh grafach. ___________________________________________________ ___________________________________________________ ___________________________________________________ _________________________________________________ [3] 4877.03 4 [Turn over (b) T ann ga solais isteach i me n dar comh ifeacht athraonta 1.39 ar uillinn mar a thaispe ntar in F or 2.2. Athraontar an ga taobh istigh den mhe n agus taisteala onn s go dt an dromchla uachtair mar a mb onn s ionsaitheach ar uillinn chritici il C an mhe in. Scr daitheoir Amh in Marcanna Athmharc C F or 2.2 (i) Cuir s os ar a dtarla onn don gha ag an dromchla uachtair. Cad a tharl dh d mbuailfeadh ga eile leis an dromchla uachtair ar uillinn is m n an uillinn chritici il? ___________________________________________________ ___________________________________________________ _________________________________________________ [2] (ii) R omh uillinn chritici il an mhe in. Uillinn chritici il = __________ [2] (iii) R omh m id na huillinne ionsaithe . Uillinn = __________ 4877.03 [3] 5 [Tiontaigh an leathanach 3 (a) Taispe nann F or 3.1 r ad OA suite ar phr omhais lionsa. T irgeann an lionsa omh ceartd reach, laghdaithe, fh or il den r ad seo. Ar F or 3.1 tarraing lionsa cu leis an omh seo a th irgeadh. Ar an l ar id, lip adaigh an cine l lionsa at tarraingthe agat agus marc il go soil ir point f casacha an lionsa. Tarraing dh gha phointe A an r ada leis an omh a aimsi agus lip adaigh IB . Taispe in su omh na s ile leis an omh a bhreathn . Scr daitheoir Amh in Marcanna Athmharc A pr omhais O [4] F or 3.1 (b) (i) Duine a bhfuil an alang radhairc mi ipe air, comhl naigh F or 3.2 lena l iri c n d igh a n-athraonfadh a sh il gathanna r ad ag an igr och. S il [1] F or 3.2 (ii) Comhl naigh F or 3.3 anseo th os lena l iri cad mar is f idir an alang seo a cheart le lionsa cu . S il [2] F or 3.3 4877.03 6 [Turn over (iii) Duine at buailte ag fadradharc, n thig leis r ada a fheice il go soil ir ach ag faid 35.0 cm go h igr och na sh ile. Luaigh an cine l lionsa agus r omh a fhad f casach le raon gl radhairc is l an duine go 25.0 cm a cheart . An cine l lionsa = _________________ Marcanna Athmharc [1] Fad f casach = __________ cm Scr daitheoir Amh in [2] (iv) R omh cumhacht an lionsa cheartaithe seo. Cumhacht = __________ D 4877.03 [2] 7 [Tiontaigh an leathanach 4 (a) (i) Taispe nann an graf uachtair in F or 4.1 tonn ascnamhach S1. Ar na haiseanna ochtair, sceitse il graf do thonn eile S2 a thabharfaidh, nuair a fhorshu fear ar S1 , trasna ocht scriosach ioml n ag an phointe teagmh la. Scr daitheoir Amh in Marcanna Athmharc S1 d 0 t S2 d 0 t [2] F or 4.1 (ii) Trasna ocht t g la ioml n idir dh thonn, is c s eile seo de phrionsabal an fhorshu mh chur i bhfeidhm. Luaigh an coinn oll do thrasna ocht t g la ioml n. ___________________________________________________ _________________________________________________ [1] 4877.03 8 [Turn over (b) (i) I dturgnamh ar thrasna ocht scoilt n Young, is y an deighilt idir dh fhrainse leantacha gheala n dhorcha i bpatr n na trasna ochta a fhaightear. Ar F or 4.2 sceitse il graif a thaispe nfaidh an gaol idir y agus Scr daitheoir Amh in Marcanna Athmharc 1. tonnfhad an tsolais a bh in s id, 2. deighilt a na scoilt n . I ngach c s, fanann na cainn ochta uile tairiseach taobh amuigh de na hathr ga sin a bh onn san ireamh. y 0 y 0 a [4] F or 4.2 (ii) I dturgnamh Young ar scoilt n baintear s id as solas dar tonnfhad 589 nm. Faightear patr n trasna ochta ar sc ile n at 1.30 m ar shi l na scoilt n . Is 0.021 mm an sp s il ar an sc ile n idir l r fhrainse dorcha an phatr in agus l r an fhrainse ghil at c ngarach d . R omh deighilt na scoilt n . Deighilt na scoilt n = __________ mm 4877.03 9 [3] [Tiontaigh an leathanach 5 I gcodanna (a) agus (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. Scr daitheoir Amh in Marcanna Athmharc (a) Cuir s os ar an strucht r at ar na comhbhaill d ionsc p sol bhta. N c ir duit cur s os ar phrionsabail fhisiceacha sn ith n opt la. _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ _____________________________________________________ [4] 4877.03 10 [Turn over (b) (i) T b og shingil in s id in A-scanadh ultrasonach. Luaigh an t-aga tipici il do bh og d leith id agus luaigh raon minic ochta tipici il a s idtear don chomhartha. Scr daitheoir Amh in Marcanna Athmharc Aga _________________ s [1] Raon minic ochta __________ MHz go __________ MHz [1] (ii) Cuir s os ar A-scanadh ultrasonach agus l irigh an fhaisn is a thugann s . ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ ___________________________________________________ _________________________________________________ [3] (iii) Luaigh an pr omhdhifear idir an fhaisn is a fhaightear B-scanadh ultrasonach agus an fhaisn is a fhaightear A-scanadh. ___________________________________________________ _________________________________________________ [1] Caighde n na cumars ide scr ofa 4877.03 [2] 11 [Tiontaigh an leathanach 6 (a) (i) Ar Fior 6.1 sceitse il graf a thaispe nfaidh an gaol idir fuinneamh E f t in agus a mhinic ocht f. Scr daitheoir Amh in Marcanna Athmharc E 0 f [1] F or 6.1 (ii) An bhfuil s ceart a r nach n-athra onn luas f t in riamh, go mb onn s tairiseach i gc na ? M nigh do fhreagra. ___________________________________________________ _________________________________________________ [1] (b) M nigh go c il ocht il cad a chialla onn an t arma obairfheidhm dromchla miotail. _______________________________________________________ _______________________________________________________ _______________________________________________________ _____________________________________________________ [2] (c) Athra onn leictreon in adamh leibh al fuinnimh de 0.53 eV go leibh al de 3.39 eV. R omh minic ocht na rada ochta leictreamaighn ada seo. Minic ocht = __________ Hz 4877.03 [4] 12 [Turn over 7 (a) Deirtear go bhfuil d acht toinne is c ithn n ag solas. Ainmnigh dh thurgnamh, ceann amh in acu a l ir onn iompar solais mar thonn agus an ceann eile a l ir onn mar ch ithn n . I ngach c s cuir s os go hachomair ar an fhianaise thurgnamhach a thaca onn leis an rang bhartha d iompar. Tonn _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ C ithn n _______________________________________________________ _______________________________________________________ _______________________________________________________ _____________________________________________________ [4] (b) Is f idir glacadh leis go mb onn leictreon sa bhunstaid in adamh hidrigine ag gluaiseacht i bhfithis chiorclach dar trastomhas 1.08 10 10 m. T an tonnfhad a bhaineann leis an leictreon seo cothrom le himl ne na fithise. R omh luas an leictreoin leis an choinn oll seo a sh samh. Luas = __________ m s 1 [4] SEO DEIREADH AN SCR DPH IP IR 4877.03 13 Scr daitheoir Amh in Marcanna Athmharc Cuireadh isteach ar chead chun an t- bhar c ipchirt uile a at irgeadh. I gc sanna irithe is f idir n r irigh le CCEA teagmh il a dh anamh le h in ir c ipchirt agus beidh s s sta na hadmh lacha sin a f gadh ar l r a chur ina gceart amach anseo ach a chur ar an eolas. Fisic GCE Bileog Sonra agus Foirml Luachanna na dtairiseach luas an tsolais i bhfol s c = 3.00 108 m s 1 bunlucht e = 1.60 10 19 C tairiseach Planck h = 6.63 10 34 J s mais leictreoin me = 9.11 10 31 kg mais pr t in mp = 1.67 10 27 kg luasgh ar saorthitime ar dhromchla an Domhain g = 9.81 m s 2 leictreonvolta 1 eV = 1.60 10 19 J Foirml s ideacha D fh adfadh na foirml seo a leanas a bheith s ideach le roinnt ceisteanna sa scr d a fhreagairt: Meicnic Imchoime d fuinnimh 1 2 2mv 1mu2 = Fs 2 Dl Hooke F = kx (tairiseach linge in k) Leibh al fuaimdh ine/dB = 10 lg10 I I0 Trasna ocht an d fhoinse = Foirmle an lionsa 111 u+v= f Formh ad v m=u Difr ocht poit insil losa V= Roinnteoir poit insil Vout = d fh rsa tairiseach Fuaim Tonnta ay d Solas Leictreachas Ir (F.l.g. ; Friota ocht Inmhe nach r) C ithn n agus f t in Cothrom id de Broglie 4877.04 h =p R1Vin R1 + R2

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Additional Info : Gce Physics January 2009 Assessment Unit AS 2, Module 2: Waves, Photons and Medical Physics - Revised (Irish-Medium)
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