{"id":2604,"date":"2016-11-11T02:11:52","date_gmt":"2016-11-11T02:11:52","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=2604"},"modified":"2024-09-02T16:30:02","modified_gmt":"2024-09-02T16:30:02","slug":"principios-da-propagacao-da-luz","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/raciocinio-logico\/principios-da-propagacao-da-luz\/","title":{"rendered":"Princ\u00edpios da Propaga\u00e7\u00e3o da luz"},"content":{"rendered":"

Racioc\u00ednio L\u00f3gico<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

Princ\u00edpios da Propaga\u00e7\u00e3o da luz.<\/span><\/span><\/span><\/span><\/span><\/p>\n

Apesar do formul\u00e1rio abaixo contendo os tr\u00eas Princ\u00edpios da Propaga\u00e7\u00e3o Retil\u00ednea da luz, esse conte\u00fado envolve muita teoria, em caso de d\u00favidas voc\u00ea pode encontr\u00e1-la em <\/span><\/span>fisicaevestibular.com.br \u2013 \u00d3ptica geom\u00e9trica – Princ\u00edpios da Propaga\u00e7\u00e3o Retil\u00ednea da luz<\/span><\/span><\/span><\/span><\/p>\n

Princ\u00edpios da Propaga\u00e7\u00e3o da Luz<\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

Exerc\u00edcios de vestibulares sobre racioc\u00ednio l\u00f3gico com resolu\u00e7\u00f5es comentadas sobre <\/b><\/span><\/span><\/span>Princ\u00edpios da Propaga\u00e7\u00e3o Retil\u00ednea da Luz<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

01-CESGRANRIO-RJ)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>menor tempo poss\u00edve<\/b><\/span><\/span><\/span>l entre um <\/b><\/span><\/span><\/span>eclipse do Sol e um eclipse da Lua \u00e9 de<\/b><\/span><\/span><\/span> aproximadamente:<\/b><\/span><\/span><\/span><\/p>\n

a)<\/b><\/span><\/span><\/span> 12 horas\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span>b)<\/b><\/span><\/span><\/span> 24 horas\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span>c)<\/b><\/span><\/span><\/span> 1 semana\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span>d) <\/b><\/span><\/span><\/span>2 semanas\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span>e)<\/b><\/span><\/span><\/span> 1 m\u00eas<\/b><\/span><\/span><\/span><\/p>\n

02-(FGV-SP)\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span>por\u00e3o de uma antiga casa possui uma estreita clarab\u00f3ia quadrada de 100 cm<\/b><\/span><\/span>2 <\/b><\/span><\/sup><\/span>\u00a0de \u00e1rea,<\/b><\/span><\/span> que<\/b><\/span><\/span><\/span><\/span><\/p>\n

permite a entrada da luz do exterior,<\/b><\/span><\/span> <\/b>refletida difusamente<\/b><\/span><\/span> pelas <\/b><\/span><\/span>constru\u00e7\u00f5es que a cercam<\/b><\/span><\/span>. <\/b><\/span><\/span><\/span><\/span>\"\"<\/p>\n

Na <\/b><\/span><\/span>ilustra\u00e7\u00e3o, vemos uma aranha, um rato e um gato,<\/b><\/span><\/span> que <\/b><\/span><\/span>se encontram parados no mesmo plano<\/b><\/span><\/span> <\/b>vertical que intercepta o centro da geladeira e o centro da clarab\u00f3ia.<\/b><\/span><\/span> <\/b><\/span><\/span><\/p>\n

Sendo a <\/b><\/span><\/span>clarab\u00f3ia a fonte luminosa,<\/b><\/span><\/span> pode-se dizer que, <\/b><\/span><\/span>devido \u00e0 interposi\u00e7\u00e3o da geladeira<\/b><\/span><\/span>, a <\/b><\/span><\/span>aranha,<\/b><\/span><\/span> o <\/b><\/span><\/span>rato<\/b><\/span><\/span> e o <\/b><\/span><\/span>gato, nesta ordem, est\u00e3o em regi\u00f5es <\/b><\/span><\/span>de:<\/b><\/span><\/span><\/span><\/span><\/p>\n

a)<\/b><\/span><\/span> luz, luz e penumbra.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span>penumbra, luz e penumbra.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span>sombra, penumbra e luz.\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span>luz, penumbra e sombra.\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span>penumbra, sombra e sombra<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

 <\/p>\n

03-(UNESP-SP)\u00a0<\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Quando o <\/b><\/span><\/span>Sol est\u00e1 a pino, <\/b><\/span><\/span>uma <\/b><\/span><\/span>menina coloca um l\u00e1pis de 7,0.10<\/b><\/span><\/span>-3<\/b><\/span><\/sup><\/span> m <\/b><\/span><\/span>de <\/b><\/span><\/span>di\u00e2metro paralelamente <\/b><\/span><\/span>ao <\/b><\/span><\/span>solo e observa a sombra por ele formada pela luz do Sol.<\/b><\/span><\/span><\/span><\/span><\/p>\n

Ele nota que a <\/b><\/span><\/span>sombra do l\u00e1pis \u00e9 bem n\u00edtida quando ele est\u00e1 pr\u00f3ximo ao solo,<\/b><\/span><\/span> mas \u00e0 <\/b><\/span><\/span>medida que vai levantando o l\u00e1pis, a sombra perde nitidez at\u00e9 desaparecer, restando apenas a penumbra.<\/b><\/span><\/span> <\/b><\/span><\/span><\/p>\n

Sabendo-se que o <\/b><\/span><\/span>di\u00e2metro do Sol \u00e9 14.10<\/b><\/span><\/span>8<\/b><\/span><\/sup><\/span> m e a dist\u00e2ncia do Sol \u00e0 Terra \u00e9 de 15.10<\/b><\/span><\/span>10<\/b><\/span><\/sup><\/span> m, <\/b><\/span><\/span>determine a <\/b><\/span><\/span>altura do l\u00e1pis em <\/b><\/span><\/span>rela\u00e7\u00e3o ao solo <\/b><\/span><\/span>quando a sombra desaparece.<\/b><\/span><\/span><\/span><\/span><\/p>\n

04-(UFF-RJ)\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>esquema abaixo <\/b><\/span><\/span><\/span>representa um <\/b><\/span><\/span><\/span>objeto situado em frente a uma c\u00e2mara escura\u00a0 com orif\u00edcio.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

No esquema, O \u00e9 a altura do objeto, P a dist\u00e2ncia do objeto ao orif\u00edcio da c\u00e2mara e P\u2019 a dist\u00e2ncia do orif\u00edcio \u00e0 imagem ou o<\/b><\/span><\/span><\/span>\"\"<\/p>\n

comprimento da caixa. <\/b><\/span><\/span><\/span><\/p>\n

Esse <\/b><\/span><\/span><\/span>dispositivo ilustra como funciona uma m\u00e1quina fotogr\u00e1fica,<\/b><\/span><\/span><\/span> onde a <\/b><\/span><\/span><\/span>luz atravessa o diafragma, <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>atinge o filme, sensibilizando-o. <\/b><\/span><\/span><\/span><\/p>\n

Chamando a <\/b><\/span><\/span><\/span>altura da imagem formada de i,<\/b><\/span><\/span><\/span> o <\/b><\/span><\/span><\/span>gr\u00e1fico que melhor representa a rela\u00e7\u00e3o entre i e P \u00e9:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

05-(UCSAL-BA)\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>orif\u00edcio de uma c\u00e2mara escura est\u00e1 voltado para o c\u00e9u, <\/b><\/span><\/span><\/span>numa <\/b><\/span><\/span><\/span>noite estrelada. <\/b><\/span><\/span><\/span><\/p>\n

A <\/b><\/span><\/span><\/span>parede oposta ao orif\u00edcio \u00e9 feita de papel vegetal transl\u00facido. <\/b><\/span><\/span><\/span>Um <\/b><\/span><\/span><\/span>observador que est\u00e1 atr\u00e1s da c\u00e2mara,<\/b><\/span><\/span><\/span> se <\/b><\/span><\/span><\/span>olhasse diretamente para o c\u00e9u, veria o Cruzeiro do Sul conforme o esquema I.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Olhando a imagem, no papel vegetal, <\/b><\/span><\/span><\/span>por <\/b><\/span><\/span><\/span>tr\u00e1s da c\u00e2mara, o observador v\u00ea o Cruzeiro do Sul conforme o esquema:<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

06-(FUVEST-SP)\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

No <\/b><\/span><\/span><\/span>instante t = 0, <\/b><\/span><\/span><\/span>um <\/b><\/span><\/span><\/span>feixe horizontal de raios luminosos, <\/b><\/span><\/span><\/span>provenientes da <\/b><\/span><\/span><\/span>chama de uma vela A, atravessa<\/b><\/span><\/span><\/span> um <\/b><\/span><\/span><\/span>pequeno orif\u00edcio de um fino anteparo <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>projeta uma pequena mancha luminosa B <\/b><\/span><\/span><\/span>no <\/b><\/span><\/span><\/span>anteparo vertical, <\/b><\/span><\/span><\/span>conforme <\/b><\/span><\/span><\/span>figura.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

As <\/b><\/span><\/span><\/span>dist\u00e2ncias da chama ao orif\u00edcio e do orif\u00edcio ao anteparo <\/b><\/span><\/span><\/span>s\u00e3o, respectivamente, <\/b><\/span><\/span><\/span>a e 2a.<\/b><\/span><\/span><\/span><\/p>\n

Se a <\/b><\/span><\/span><\/span>vela queima a uma velocidade V\u2019 = 2,0 cm\/min, <\/b><\/span><\/span><\/span>ent\u00e3o a <\/b><\/span><\/span><\/span>mancha luminosa se desloca verticalmente sobre o anteparo com velocidade (em cm\/min):<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

07-(FUVEST-SP)\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>jovem,<\/b><\/span><\/span><\/span> em uma <\/b><\/span><\/span><\/span>praia do Nordeste, v\u00ea a Lua a Leste, pr\u00f3xima ao mar.<\/b><\/span><\/span><\/span>\"\"<\/p>\n

Ele <\/b><\/span><\/span><\/span>observa que a Lua apresenta sua metade superior iluminada, <\/b><\/span><\/span><\/span>enquanto a <\/b><\/span><\/span><\/span>metade inferior permanece escura. <\/b><\/span><\/span><\/span><\/p>\n

Essa <\/b><\/span><\/span><\/span>mesma situa\u00e7\u00e3o, vista do espa\u00e7o, <\/b><\/span><\/span><\/span>a <\/b><\/span><\/span><\/span>partir de um sat\u00e9lite artificial da Terra, <\/b><\/span><\/span><\/span>que se <\/b><\/span><\/span><\/span>encontra no prolongamento do eixo que passa pelos polos, <\/b><\/span><\/span><\/span>est\u00e1 <\/b><\/span><\/span><\/span>esquematizada (parcialmente) na figura, onde J \u00e9 a posi\u00e7\u00e3o do jovem.<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>A\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>B\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>C\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>D\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>E<\/b><\/span><\/span><\/span><\/p>\n

08-(CESGRANRIO)\u00a0<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00c0s <\/b><\/span><\/span><\/span>18,0h, uma pessoa olha para o c\u00e9u e observa que metade da Lua est\u00e1 iluminada pelo Sol.<\/b><\/span><\/span><\/span> <\/b><\/p>\n

N\u00e3o <\/b><\/span><\/span><\/span>se tratando de um <\/b><\/span><\/span><\/span>eclipse da Lua, ent\u00e3o \u00e9 correto afirmar que a fase da Lua, nesse momento:<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>s\u00f3 pode ser <\/b><\/span><\/span><\/span>quarto crescente\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>s\u00f3 pode ser <\/b><\/span><\/span><\/span>quarto minguante\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>s\u00f3 pode ser <\/b><\/span><\/span><\/span>Lua cheia<\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>s\u00f3 pode ser <\/b><\/span><\/span><\/span>Lua Nova\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>pode ser <\/b><\/span><\/span><\/span>quarto crescente ou quarto minguante<\/b><\/span><\/span><\/span><\/p>\n

09-\u00a0(Ufv-MG)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00a0Em uma <\/b><\/span><\/span><\/span>situa\u00e7\u00e3o, ilustrada na figura 1, <\/b><\/span><\/span><\/span>uma <\/b><\/span><\/span><\/span>l\u00e2mpada <\/b><\/span><\/span><\/span>e um <\/b><\/span><\/span><\/span>observador t\u00eam, entre si, <\/b><\/span><\/span><\/span>uma <\/b><\/span><\/span><\/span>l\u00e2mina de vidro colorida. <\/b><\/span><\/span><\/span><\/p>\n

Em <\/b><\/span><\/span><\/span>outra situa\u00e7\u00e3o, ilustrada na figura 2, <\/b><\/span><\/span><\/span>ambos, a <\/b><\/span><\/span><\/span>l\u00e2mpada e o observador, encontram-se \u00e0 frente <\/b><\/span><\/span><\/span>de uma <\/b><\/span><\/span><\/span>l\u00e2mina de pl\u00e1stico colorida, lisa e opaca. <\/b><\/span><\/span><\/span>\"\"<\/p>\n

Mesmo sendo a <\/b><\/span><\/span><\/span>l\u00e2mpada emissora de luz branca, <\/b><\/span><\/span><\/span>em <\/b><\/span><\/span><\/span>ambas as situa\u00e7\u00f5e<\/b><\/span><\/span><\/span>s o <\/b><\/span><\/span><\/span>observador enxerga as l\u00e2minas como sendo de cor verde.<\/b><\/span><\/span><\/span><\/p>\n

Pode-se, ent\u00e3o, <\/b><\/span><\/span><\/span>afirmar que, predominantemente:<\/b><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>vidro reflete a luz de cor verde, absorvendo<\/b><\/span><\/span><\/span> as outras cores, e o <\/b><\/span><\/span><\/span>pl\u00e1stico transmite a luz de cor verde, absorvendo as outras cores.<\/b><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>vidro absorve a luz de cor verde, transmitindo <\/b><\/span><\/span><\/span>as outras cores, e o <\/b><\/span><\/span><\/span>pl\u00e1stico absorve a luz de cor verde, refletindo as outras cores.<\/b><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>vidro transmite a luz de cor verde, absorvendo <\/b><\/span><\/span><\/span>as outras cores, e o <\/b><\/span><\/span><\/span>pl\u00e1stico absorve a luz de cor verde, refletindo as outras cores.<\/b><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>vidro transmite a luz de cor verde,<\/b><\/span><\/span><\/span> <\/b>absorvendo <\/b><\/span><\/span><\/span>as outras cores, e o <\/b><\/span><\/span><\/span>pl\u00e1stico reflete a luz de cor verde, absorvendo as outras cores.<\/b><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>vidro absorve a luz de cor verde,<\/b><\/span><\/span><\/span> <\/b>transmitindo<\/b><\/span><\/span><\/span> as outras cores, e o <\/b><\/span><\/span><\/span>pl\u00e1stico reflete a luz de cor verde, absorvendo as\u00a0outras cores.\u00a0<\/b><\/span><\/span><\/span><\/p>\n

10-(ENEM-MEC)<\/b><\/span><\/span><\/span><\/p>\n

\"\"\u00a0\u00a0\u00a0<\/span><\/p>\n

\u00a0Para que uma <\/b><\/span><\/span><\/span>subst\u00e2ncia seja colorida ela deve absorver luz na regi\u00e3o do vis\u00edvel. <\/b><\/span><\/span><\/span><\/p>\n

Quando uma <\/b><\/span><\/span><\/span>amostra absorve luz vis\u00edvel,<\/b><\/span><\/span><\/span> a <\/b><\/span><\/span><\/span>cor que percebemos \u00e9 a soma das cores restantes <\/b><\/span><\/span><\/span>que <\/b><\/span><\/span><\/span>s\u00e3o refletidas ou transmitidas pelo objeto. <\/b><\/span><\/span><\/span><\/p>\n

A figura 1 <\/b><\/span><\/span><\/span>mostra o espectro de absor\u00e7\u00e3o para uma subst\u00e2ncia <\/b><\/span><\/span><\/span>e \u00e9 <\/b><\/span><\/span><\/span>poss\u00edvel observar que h\u00e1 um comprimento de onda em que a intensidade de absor\u00e7\u00e3o \u00e9 m\u00e1xima.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Um <\/b><\/span><\/span><\/span>observador pode prever a cor dessa subst\u00e2ncia pelo uso da roda de cores <\/b><\/span><\/span><\/span>(Figura 2): o <\/b><\/span><\/span><\/span>comprimento de onda correspondente \u00e0 cor do objeto \u00e9 encontrado no lado oposto ao comprimento de onda da absor\u00e7\u00e3o m\u00e1xima.<\/b><\/span><\/span><\/span><\/p>\n

Qual a <\/b><\/span><\/span><\/span>cor da subst\u00e2ncia que deu origem ao espectro <\/b><\/span><\/span><\/span>da <\/b><\/span><\/span><\/span>figura 1?<\/b><\/span><\/span><\/span><\/p>\n

A. <\/b><\/span><\/span><\/span>Azul.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span>B. <\/b><\/span><\/span><\/span>Verde.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span>C. <\/b><\/span><\/span><\/span>Violeta.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span>D. <\/b><\/span><\/span><\/span>Laranja.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span>E. <\/b><\/span><\/span><\/span>Vermelho.<\/b><\/span><\/span><\/span><\/p>\n

11-(FUVEST-SP)<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Uma <\/b><\/span><\/span><\/span>determinada montagem \u00f3ptica <\/b><\/span><\/span><\/span>\u00e9 <\/b><\/span><\/span><\/span>composta por um anteparo, <\/b><\/span><\/span><\/span>uma <\/b><\/span><\/span><\/span>m\u00e1scara com furo triangular <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>tr\u00eas l\u00e2mpadas, L<\/b><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span>, L<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span>\u00a0e L<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sub><\/span>, <\/b><\/span><\/span><\/span>conforme a <\/b><\/span><\/span><\/span>figura a seguir. <\/b><\/span><\/span><\/span><\/p>\n

L<\/b><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span>\u00a0e L<\/b><\/span><\/span><\/span>3<\/b><\/span><\/span><\/sub><\/span>\u00a0s\u00e3o pequenas l\u00e2mpadas de lanterna <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>L<\/b><\/span><\/span><\/span>2<\/b><\/span><\/span><\/sub><\/span>, uma <\/b><\/span><\/span><\/span>l\u00e2mpada com filamento extenso <\/b><\/span><\/span><\/span>e <\/b><\/span><\/span><\/span>linear,<\/b><\/span><\/span><\/span> mas <\/b><\/span><\/span><\/span>pequena nas outras dimens\u00f5es.<\/b><\/span><\/span><\/span> No <\/b><\/span><\/span><\/span>esquema,<\/b><\/span><\/span><\/span> apresenta-se a <\/b><\/span><\/span><\/span>imagem projetada no anteparo com apenas L<\/b><\/span><\/span><\/span>1<\/b><\/span><\/span><\/sub><\/span>\u00a0acesa.<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span><\/span>esbo\u00e7o que melhor representa <\/b><\/span><\/span><\/span>o <\/b><\/span><\/span><\/span>anteparo iluminado pelas tr\u00eas l\u00e2mpadas acesas<\/b><\/span><\/span><\/span> \u00e9<\/b><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

 <\/p>\n

Confira as resolu\u00e7\u00f5es comentadas<\/span><\/a><\/h3>\n","protected":false},"excerpt":{"rendered":"

Racioc\u00ednio L\u00f3gico Princ\u00edpios da Propaga\u00e7\u00e3o da luz. Apesar do formul\u00e1rio abaixo contendo os tr\u00eas Princ\u00edpios da Propaga\u00e7\u00e3o Retil\u00ednea da luz, esse conte\u00fado envolve muita teoria, em caso de d\u00favidas voc\u00ea pode encontr\u00e1-la em fisicaevestibular.com.br \u2013 \u00d3ptica geom\u00e9trica – Princ\u00edpios da Propaga\u00e7\u00e3o Retil\u00ednea da luz Princ\u00edpios da Propaga\u00e7\u00e3o da Luz Exerc\u00edcios de vestibulares sobre racioc\u00ednio l\u00f3gico com resolu\u00e7\u00f5es comentadas sobre Princ\u00edpios<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":2508,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-2604","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/comments?post=2604"}],"version-history":[{"count":3,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2604\/revisions"}],"predecessor-version":[{"id":2610,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2604\/revisions\/2610"}],"up":[{"embeddable":true,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2508"}],"wp:attachment":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/media?parent=2604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}