An object is placed 20 cm in front of a convex mirror that has a radius of curvature of magnitude 16 cm (note this is not the focal length).

Transcription

1 A bjet is plae 0 m i frt f a ex mirrr that has a raius f urature f magitue 6 m (te this is t the fal legth). ) Desribe the image frme: a) real a ierte b) real a upright ) irtual a ierte ) irtual a upright e) e f the abe ) What is the magitue f the image istae? a) 3.7 m b) 4.7 m ) 5.7 m ) 6.7 m e) 7.7 m A bjet is plae i frt f a ergig les utsie the fal legth f 8 m. The les prues a image that is 4 m high a 45 m frm the les. 3) Desribe the image: a) real a ierte b) real a upright ) irtual a ierte ) irtual a upright e) e f the abe 4) What is the height f the bjet? a). m b) 3.3 m ) 4.4 m ) 5.5 m e) 6.6 m 5) What is the magitue f the bjet istae? a) 74 m b) 84 m ) 94 m ) 04 m e) 4 m 6) What wul happe t the abslute alue f the magifiati f this bjet if the les were plae uer water? (Assume the iex f refrati f the les is greater tha the iex f refrati f water.) a) it wul irease b) it wul erease ) it wul remai the same

2 Light with waelegth f 500 m is ile i a sigle slit iffrati experimet with a slit with f 0.03 mm. A sree that is plae m away frm the slit isplays the iffrati patter. 7) What is the with f the etral bright frige? a).7 m b) 3.7 m ) 4.7 m ) 5.7 m e) 6.7 m 8) At what agle abe the etral bright frige is the 3 r ark frige late? a).9 egrees b).9 egrees ) 3.9 egrees ) 4.9 egrees e) 5.9 egrees 9) Hw may ark friges a be see the sree? a) 40 b) 80 ) 0 ) 60 e) 00 0) What wul happe t the patter if the slit with were erease? a) the friges wul get lser tgether b) the friges wul sprea farther apart ) thig

3 Raar with a waelegth f.35 m is iiet a thi prtetie atig erig a stealth fighter. The iex f refrati f the thi atig is.84. ) What is the waelegth f the raar waes i the thi atig? a) 0.73 m b). m ).35 m ).86 m e).48 m ) At what miimum thikess is the reflete raar a miimum (estrutie iterferee)? a) 0.07 m b) 0.5 m ) 0.8 m ) 0.9 m e) 0.4 m 3) Hw es the miimum thikess fr strutie iterferee mpare t the abe aswer? a) it is greater b) it is less ) it is the same Phts satter ff a eletr i a Cmpt Effet experimet. 4) At what efleti agle relatie t its iitial path es a pht hae the greatest hage i waelegth? (where 0 egrees is tiuig straight a 80 egrees is efletig iretly bak) a) 0 egrees b) 45 egrees ) 90 egrees ) 35 egrees e) 80 egrees 5) I the Cmpt Effet experimet, the pht exhibits whih prperties? a) wae-like prperties b) partile-like prperties ) eletr-like prperties

4 A ertai metal i the phteletri effet experimet has a wrk futi f.7 ev. Fr a gie experimet, the maximum kieti eergy f the ejete eletrs is.8 ev. 6) What is the waelegth f the iiet phts? a) 76 m b) 376 m ) 476 m ) 576 m e) 676 m 7) What is the DeBrglie waelegth f the ejete eletrs? a) 0.5 m b) 0.6 m ) 0.7 m ) 0.8 m e) 0.9 m 8) What is the maximum waelegth f phts that wul ejet eletrs frm this metal? a) 359 m b) 459 m ) 559 m ) 659 m e) 759 m 9) If the wrk futi were irease, hw wul the abe aswer hage? a) it wul irease b) it wul erease ) it wul stay the same

5 A eletr i a exite hyrge atm makes tw trasitis. First the eletr rps frm the =5 t the =3 state, the the eletr rps frm the =3 t the = state. 0) Cmpare the eergy a waelegth f the pht emitte i eah trasiti. a) i the st trasiti the eergy f the pht a the waelegth f the pht are bth greater b) i the st trasiti the eergy f the pht is greater a the waelegth f the pht is less ) i the st trasiti the eergy f the pht is less a the waelegth f the pht is greater ) i the st trasiti the eergy f the pht a the waelegth f the pht are bth less e) e f the abe ) Calulate the frequey f the pht emitte i the first trasiti. a).34x0 4 Hz b).34x0 4 Hz ) 3.34x0 4 Hz ) 4.34x0 4 Hz e) 5.34x0 4 Hz ) Calulate the mmetum f the pht emitte i the se trasiti. a) 3.46x0-7 kg-m/s b) 4.46x0-7 kg-m/s ) 5.46x0-7 kg-m/s ) 6.46x0-7 kg-m/s e) 7.46x0-7 kg-m/s 3) Whih f the fllwig quatum states ul the eletr hae bee i at sme pit urig these trasitis? a) =, l =, m l = 0, m s = +½ b) = 3, l = -, m l = 0, m s = -½ ) = 3, l = 0, m l =, m s = +½ ) = 5, l = 3, m l = -, m s = +½ e) = 5, l =, m l = -3, m s = -½

6 Three spae ships are see flyig past yur lassrm a spae stati. Whe mig, Ship is measure t be ly 78% f its legth mpare t whe it is at rest at the spae stati. Ship is mig away frm the spae stati at 0.6 a Ship 3 is mig twar the spae stati (i the ppsite ireti as Ship ) at ) Hw fast is Ship mig relatie t the spae stati? a) 0 b) 0.3 ) 0.43 ) 0.63 e) ) After 3 hurs pass yur wath, hw muh time measure t hae passe Ship s lks? a).80 hurs b).40 hurs ) 3.00 hurs ) 3.75 hurs e) 5.00 hurs 6) Hw fast es Ship measure Ship 3 t be mig? a) 0.0 b) 0.38 ) 0.95 ).00 e).40 7) Yu se a rai sigal (at the spee f light) t Ship 3. Hw fast es Ship 3 measure it apprahig? a) 0. b) 0.8 ).0

7 Fially, three aitial physis prblems are belw: 8) All trasitis f eletrs i the Hyrge atm that prue isible light ile whih eergy leel? a) = b) = ) =3 ) =4 e) =5 9) I raiatie eay, a alpha partile is, a beta partile is, a a gamma partile is. a) a eletr, eletrmageti raiati, a helium uleus b) eletrmageti raiati, a helium uleus, a eletr ) a helium uleus, a eletr, eletrmageti raiati 30) What is the meaig f a materials half-life? a) the amut f material remaiig whe half f it has eaye away b) the eergy release frm the uleus i raiatie eay ) the time it takes fr half f a sample t eay away

8 F ma kqq U r A C C p Olie Physis Frmulas C C kq q F r U V q Q V C F E q kq V r U C QV C s C R s R R kq E r V E Q I t R L RC R V IR P IV Q Q e A t RC I Q Q e F qbsi F ILB si B r B I m r B BAs emf BL qb emf N t Z R B X L X C P V rms I rms s I I s LI U s s V p N p ta U X L R X C R p R t V N V I Z rms rms X X L fl fc f f LC E B E B 9 k Nm / C C / m N q 9 e.600 C / 8 30 m / s Tm A

9 Olie Physis Frmulas i f si si m h i i f R i r h si ta P si m si m W si m f mi. t m ' t m' ' D h h hf KEmax W ' s p E hf m B E 3.6eV 4 p m E py h 4 Et h 4 t t L L p m E m AB AC CB AC CB 8 30 m / s 34 h J s m 3 e 9.0 kg 7 m p.670 kg

10 ON-LINE PHYSICS EXAM # MR. POTTER Name: Date: ) Bubble i the ID umber seti f the satr frm with FIVE ZEROS a the the LAST FIVE DIGITS f yur SOCIAL SECURITY NUMBER. (Fr example ) ) This Exam is 90 mi lg - 30 multiple-hie questis. Chse the e BEST aswer fr eah questi. Yu are t pealize fr guessig. Wath yur time! (Aswer all questis.) 3) Yu may use ly a peil a alulatr. (Frmula sheet is prie.) 4) Use the test as srath paper (r the paper prie by the testig eter). Ha EVERYTHING bak i r yu will reeie a 0 the exam! 5) Srig: all 5 aswer hie questis are 6 pts. eah, all 3 aswer hie questis are 3 pts. eah, all aswer hie questis are pts. eah. Ttal pssible pits = 56 pts. 6) This is test frm. Be sure t FILL THIS IN yur satr frm. All frms are equialet tests (ly umbers hae bee hage.) 7) Als, write yur ame, the lass, the ate, a my ame the satr frm. G Luk!

11 DID YOU BUBBLE IN AN ID NUMBER AND TEST FORM ON THE SCANTRON? (see frt page fr istrutis)