{"id":2598,"date":"2016-11-11T02:01:31","date_gmt":"2016-11-11T02:01:31","guid":{"rendered":"http:\/\/fisicaevestibular.com.br\/novo\/?page_id=2598"},"modified":"2024-09-02T16:31:18","modified_gmt":"2024-09-02T16:31:18","slug":"reflexao-da-luz-espelhos-planos","status":"publish","type":"page","link":"https:\/\/fisicaevestibular.com.br\/novo\/raciocinio-logico\/reflexao-da-luz-espelhos-planos\/","title":{"rendered":"Reflex\u00e3o da luz \u2013 Espelhos planos"},"content":{"rendered":"

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

 <\/p>\n

Reflex\u00e3o da luz \u2013 Espelhos planos<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

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

Como esse conte\u00fado envolve muita teoria, voc\u00ea pode encontr\u00e1-la em <\/b><\/span><\/span><\/span>fisicaevestibular.com.br \u2013 \u00d3ptica Geom\u00e9trica \u2013 Reflex\u00e3o da Luz \u2013 Espelhos Planos<\/b><\/span><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

01-(UERJ-RJ)\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Uma garota, <\/b><\/span><\/span>para <\/b><\/span><\/span>observar seu penteado, <\/b><\/span><\/span>coloca-se <\/b><\/span><\/span>em frente a um espelho plano de parede, situado a 40 cm de uma flor presa na parte de tr\u00e1s dos seus cabelos.<\/b><\/span><\/span><\/span><\/span>\"\"<\/p>\n

Buscando uma <\/b><\/span><\/span>vis\u00e3o melhor do arranjo da flor no cabelo, ela segura, <\/b><\/span><\/span>com <\/b><\/span><\/span>uma das m\u00e3os, <\/b><\/span><\/span>um <\/b><\/span><\/span>pequeno espelho plano atr\u00e1s da cabe\u00e7a, a 15 cm da flor. <\/b><\/span><\/span><\/span><\/span><\/p>\n

A <\/b><\/span><\/span>menor dist\u00e2ncia entre a flor e sua imagem<\/b><\/span><\/span>, vista <\/b><\/span><\/span>pela garota no espelho de parede,<\/b><\/span><\/span> est\u00e1 <\/b><\/span><\/span>pr\u00f3xima de:<\/b><\/span><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span>55 cm.\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span>70 cm.\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><\/span><\/p>\n

c) <\/b><\/span><\/span>95 cm.\u00a0\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><\/span><\/p>\n

d) <\/b><\/span><\/span>110 cm.\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><\/span><\/p>\n

e) <\/b><\/span><\/span>125 cm.<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

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

\"\"<\/p>\n

Uma <\/b><\/span><\/span>jovem viaja de uma cidade A para uma cidade B,<\/b><\/span><\/span> <\/b>dirigindo<\/b><\/span><\/span> um autom\u00f3vel por uma <\/b><\/span><\/span>estrada muito estreita. <\/b><\/span><\/span><\/span><\/span><\/p>\n

Em um <\/b><\/span><\/span>certo trecho, em que a estrada \u00e9 reta e horizontal, <\/b><\/span><\/span>ela <\/b><\/span><\/span>percebe que seu carro est\u00e1 entre dois caminh\u00f5es-tanque bidirecionais e iguais, <\/b><\/span><\/span>como mostra a <\/b><\/span><\/span>figura. <\/b><\/span><\/span><\/span><\/span><\/p>\n

A <\/b><\/span><\/span>jovem observa que os dois caminh\u00f5es, um visto atrav\u00e9s do espelho retrovisor plano, <\/b><\/span><\/span>e o outro, <\/b><\/span><\/span>atrav\u00e9s do para-brisa, parecem aproximar-se dela com a mesma velocidade.<\/b><\/span><\/span> <\/b><\/span><\/span><\/p>\n

Como o <\/b><\/span><\/span>autom\u00f3vel e o caminh\u00e3o de tr\u00e1s est\u00e3o viajando no mesmo sentido,<\/b><\/span><\/span> com <\/b><\/span><\/span>velocidades de 40 km\/h e 50 km\/h, <\/b><\/span><\/span>respectivamente, pode-se <\/b><\/span><\/span>concluir que a velocidade do caminh\u00e3o que est\u00e1 \u00e0 frente \u00e9:<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

a) 50 km\/h <\/b><\/span><\/span>com <\/b><\/span><\/span>sentido de A para B.\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

b) 50 km\/h <\/b><\/span><\/span>com <\/b><\/span><\/span>sentido de B para A.\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

c) 40 km\/h <\/b><\/span><\/span>com <\/b><\/span><\/span>sentido de A para B.
\nd) 30 km\/h <\/b><\/span><\/span>com <\/b><\/span><\/span>sentido de B para A.\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

e) 30 km\/h <\/b><\/span><\/span>com <\/b><\/span><\/span>sentido de A para B<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

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

\"\"<\/p>\n

\"\"<\/p>\n

Num <\/b><\/span><\/span>rel\u00f3gio de ponteiros, cada n\u00famero <\/b><\/span><\/span>foi substitu\u00eddo por <\/b><\/span><\/span>um ponto. <\/b><\/span><\/span><\/span><\/span><\/p>\n

Uma <\/b><\/span><\/span>pessoa,<\/b><\/span><\/span> ao <\/b><\/span><\/span>observar a imagem desse rel\u00f3gio<\/b><\/span><\/span> <\/b>refletida em um espelho plano, l\u00ea 8 horas.<\/b><\/span><\/span> <\/b><\/span><\/span><\/p>\n

Se <\/b><\/span><\/span>fizermos a leitura diretamente no rel\u00f3gio, <\/b><\/span><\/span>verificaremos que <\/b><\/span><\/span>ele est\u00e1 marcando:<\/b><\/span><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span>6 h.\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><\/span><\/p>\n

b) <\/b><\/span><\/span>2 h.\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><\/span><\/p>\n

c) <\/b><\/span><\/span>9 h.\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><\/span><\/p>\n

d) <\/b><\/span><\/span>4 h.\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><\/span><\/p>\n

e) <\/b><\/span><\/span>10 h.<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

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

\"\"<\/p>\n

\"\"<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

Quais <\/b><\/span><\/span>dos objetos <\/b><\/span><\/span>A, B, C, D e E s\u00e3o vistos pelo observador P ao olhar para o espelho plano esquematizado ?<\/b><\/span><\/span>
\n<\/b><\/span><\/span><\/span>a) <\/b><\/span><\/span>A, B, C, D e E\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span>A, E e B\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span>A, B e C\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span>B e C\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span>C, D e E<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

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

\"\"<\/p>\n

Um espelho plano, em posi\u00e7\u00e3o inclinada, <\/b><\/span><\/span>forma um <\/b><\/span><\/span>\u00e2ngulo de 45<\/b><\/span><\/span>o<\/b><\/span><\/sup><\/span>\u00a0com o ch\u00e3o. <\/b><\/span><\/span><\/span><\/span><\/p>\n

Uma <\/b><\/span><\/span>pessoa observa-se no\u00a0 espelho conforme a figura.<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

O <\/b><\/span><\/span>ponto <\/b><\/span><\/span>que <\/b><\/span><\/span>melhor representa\u00a0 a dire\u00e7\u00e3o <\/b><\/span><\/span>para a <\/b><\/span><\/span>qual ela deve dirigir seu olhar a fim de ver o ponto S de seu sapato \u00e9:<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

 <\/p>\n

06- (UFMG-MG)\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Observe a figura.<\/b><\/span><\/span><\/span><\/span>\"\"<\/p>\n

 <\/p>\n

Nessa figura, <\/b><\/span><\/span>dois espelhos planos est\u00e3o dispostos de modo a formar um \u00e2ngulo de 30\u00b0 entre eles. <\/b><\/span><\/span>Um <\/b><\/span><\/span>raio luminoso incide sobre um dos espelhos,<\/b><\/span><\/span> formando um <\/b><\/span><\/span>\u00e2ngulo de 70\u00b0 com a sua superf\u00edcie<\/b><\/span><\/span>.<\/b><\/span><\/span><\/span><\/span><\/p>\n

Esse raio, <\/b><\/span><\/span>depois de se <\/b><\/span><\/span>refletir nos dois espelhos,<\/b><\/span><\/span> <\/b>cruza o raio incidente formando um \u00e2ngulo <\/b><\/span><\/span>\u03b1<\/b><\/span><\/span> <\/b>de<\/b><\/span><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span>90\u00b0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span>100\u00b0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span>110\u00b0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span>120\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><\/span><\/p>\n

e) <\/b><\/span><\/span>140\u00b0<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

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

\"\"<\/p>\n

\"\"<\/p>\n

 <\/p>\n

 <\/p>\n

Um <\/b><\/span><\/span>raio de luz de uma lanterna acesa em A ilumina o ponto B, <\/b><\/span><\/span>ao ser <\/b><\/span><\/span>refletido por um espelho horizontal sobre a semi-reta DE da figura, <\/b><\/span><\/span>estando <\/b><\/span><\/span>todos os pontos <\/b><\/span><\/span>num <\/b><\/span><\/span>mesmo plano vertical.<\/b><\/span><\/span><\/span><\/span><\/p>\n

Determine a <\/b><\/span><\/span>dist\u00e2ncia entre a imagem virtual da lanterna A e o ponto B. <\/b><\/span><\/span>Considere <\/b><\/span><\/span>AD = 2 m, BE = 3 m e DE = 5 m.<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

08-(UFAL-AL)<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Duas moedas, de 10 e 50 centavos, <\/b><\/span><\/span>encontram-se <\/b><\/span><\/span>sobre o tampo de uma mesa horizontal, <\/b><\/span><\/span>em cuja <\/b><\/span><\/span>extremidade existe um espelho vertical (ver figura).<\/b><\/span><\/span><\/span><\/span>\"\"<\/p>\n

Para <\/b><\/span><\/span>efeito de c\u00e1lculo, <\/b><\/span><\/span>considere <\/b><\/span><\/span>as moedas como objetos pontuais localizados nos<\/b><\/span><\/span> <\/b>centros das circunfer\u00eancias mostradas. <\/b><\/span><\/span><\/span><\/span><\/p>\n

De acordo <\/b><\/span><\/span>com os <\/b><\/span><\/span>comprimentos dos segmentos indicados na figura, <\/b><\/span><\/span>pode-se <\/b><\/span><\/span>afirmar que <\/b><\/span><\/span>a <\/b><\/span><\/span>dist\u00e2ncia da moeda de 50 centavos \u00e0 imagem da moeda de 10 centavos \u00e9 igual a:<\/b><\/span><\/span><\/span><\/span><\/p>\n

a) <\/b><\/span><\/span>4 cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

b) <\/b><\/span><\/span>24 cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span>28 cm\u00a0 \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

d) <\/b><\/span><\/span>40 cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 <\/b><\/span><\/span><\/span><\/span><\/p>\n

e) <\/b><\/span><\/span>50 cm<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

09-(ESPM-SP)\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

Uma <\/b><\/span><\/span>foto de um casal \u00e9 tirada entre dois espelhos planos verticais <\/b><\/span><\/span>que formam um <\/b><\/span><\/span>\u00e2ngulo de 60<\/b><\/span><\/span>o<\/b><\/span><\/sup><\/span>\u00a0entre si. Qual \u00e9 a\u00a0quantidade de indiv\u00edduos que aparecem na chapa?<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

10-(Ufrgs-RS)<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\u00a0A <\/b><\/span><\/span>figura representa<\/b><\/span><\/span> a <\/b><\/span><\/span>vista frontal de Homer <\/b><\/span><\/span>comendo em <\/b><\/span><\/span>frente a dois espelhos planos<\/b><\/span><\/span>, posicionados <\/b><\/span><\/span>perpendicularmente entre si.<\/b><\/span><\/span><\/span><\/span><\/p>\n

Assinale a alternativa <\/b><\/span><\/span>que <\/b><\/span><\/span>representa a imagem que Homer observa nos espelhos.<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

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

11-(UFSCAR-SP)\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

 <\/p>\n

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Uma <\/b><\/span><\/span>crian\u00e7a observa<\/b><\/span><\/span> um <\/b><\/span><\/span>passarinho com um perisc\u00f3pio composto de dois espelhos planos E, paralelos e inclinados de 45<\/b><\/span><\/span>o<\/b><\/span><\/sup><\/span>\u00a0(figura).<\/b><\/span><\/span><\/span><\/span><\/p>\n

O<\/b><\/span><\/span>\u00a0representa o olho da crian\u00e7a e o ponto\u00a0P, o passarinho.<\/b><\/span><\/span><\/span><\/span><\/p>\n

Localize a imagem do passarinho vista pela crian\u00e7a por meio desse perisc\u00f3pio.<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

12-(UNICAMP-SP)\u00a0<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

Dois espelhos planos <\/b><\/span><\/span>e quase <\/b><\/span><\/span>paralelos est\u00e3o separados por 5,0 m. <\/b><\/span><\/span><\/span><\/span><\/p>\n

Um <\/b><\/span><\/span>homem se coloca de frente a um dos espelhos, a uma dist\u00e2ncia de 2,0 m.<\/b><\/span><\/span> <\/b><\/span><\/span><\/p>\n

Ele <\/b><\/span><\/span>observa <\/b><\/span><\/span>uma <\/b><\/span><\/span>seq\u00fc\u00eancia infinita de imagens, algumas de frente, outras de costas.<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

a) Fa\u00e7a<\/b><\/span><\/span> um <\/b><\/span><\/span>esquema<\/b><\/span><\/span> <\/b>mostrando<\/b><\/span><\/span> o <\/b><\/span><\/span>homem, os espelhos e as quatro primeiras imagens que o homem v\u00ea.<\/b><\/span><\/span><\/span><\/span><\/p>\n

b) Indique no esquema <\/b><\/span><\/span>as <\/b><\/span><\/span>imagens de frente e de costas. com as iniciais F e C.<\/b><\/span><\/span><\/span><\/span><\/p>\n

c) <\/b><\/span><\/span>Quais as <\/b><\/span><\/span>dist\u00e2ncias entre as imagens consecutivas.<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

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

\"\"<\/p>\n

\"\"<\/p>\n

 <\/p>\n

 <\/p>\n

Em uma <\/b><\/span><\/span>exposi\u00e7\u00e3o, organizada em dois andares<\/b><\/span><\/span>, foi feita uma <\/b><\/span><\/span>montagem com dois espelhos planos E<\/b><\/span><\/span>1<\/b><\/span><\/sub><\/span>\u00a0e E<\/b><\/span><\/span>2<\/b><\/span><\/sub><\/span>, <\/b><\/span><\/span>dispostos a <\/b><\/span><\/span>45\u00b0 entre os andares, <\/b><\/span><\/span>como na <\/b><\/span><\/span>figura 1. <\/b><\/span><\/span><\/span><\/span><\/p>\n

Uma <\/b><\/span><\/span>visitante, quando no andar superior, no ponto A, fotografa um quadro (Q), obtendo a foto 1, tal como vista no visor (fig. 1).<\/b><\/span><\/span><\/span><\/span><\/p>\n

Essa visitante, ao <\/b><\/span><\/span>descer as escadas, fotografa, no ponto B, <\/b><\/span><\/span>o <\/b><\/span><\/span>mesmo quadro atrav\u00e9s dos espelhos. A nova foto, tal como vista no visor, \u00e9<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

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

14-(UFRJ-RJ)<\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

As <\/b><\/span><\/span>superf\u00edcies refletoras de dois espelhos planos, E<\/b><\/span><\/span>1<\/b><\/span><\/sub><\/span>\u00a0e E<\/b><\/span><\/span>2<\/b><\/span><\/sub><\/span>, <\/b><\/span><\/span>formam <\/b><\/span><\/span>um \u00e2ngulo <\/b><\/span><\/span>\u03b1<\/b><\/span><\/span>. <\/b><\/span><\/span>O <\/b><\/span><\/span>valor num\u00e9rico <\/b><\/span><\/span><\/span><\/span><\/p>\n

\"\"<\/p>\n

deste \u00e2ngulo corresponde a\u00a0quatro vezes o n\u00famero de imagens formadas.<\/b><\/span><\/span><\/span><\/span><\/p>\n

Determine <\/b><\/span><\/span>\u03b1<\/b><\/span><\/span>.<\/b><\/span><\/span><\/span><\/span><\/p>\n

 <\/p>\n

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

Racioc\u00ednio L\u00f3gico   Reflex\u00e3o da luz \u2013 Espelhos planos \u00a0 Como esse conte\u00fado envolve muita teoria, voc\u00ea pode encontr\u00e1-la em fisicaevestibular.com.br \u2013 \u00d3ptica Geom\u00e9trica \u2013 Reflex\u00e3o da Luz \u2013 Espelhos Planos   01-(UERJ-RJ)\u00a0 Uma garota, para observar seu penteado, coloca-se em frente a um espelho plano de parede, situado a 40 cm de uma flor presa na parte de tr\u00e1s<\/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-2598","page","type-page","status-publish","hentry"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2598","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=2598"}],"version-history":[{"count":2,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2598\/revisions"}],"predecessor-version":[{"id":2603,"href":"https:\/\/fisicaevestibular.com.br\/novo\/wp-json\/wp\/v2\/pages\/2598\/revisions\/2603"}],"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=2598"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}