{"title":"Questão 49 - ENEM 2016","index":49,"discipline":"ciencias-natureza","language":null,"year":2016,"context":"![](https://enem.dev/2016/questions/49/c694a7ba-780c-4ea0-aa71-df3cbe4a300a.png)","files":["https://enem.dev/2016/questions/49/c694a7ba-780c-4ea0-aa71-df3cbe4a300a.png"],"correctAlternative":"D","alternativesIntroduction":"Qual esboço gráfico representa a frequência fo (t) detectada pelo observador?","alternatives":[{"letter":"A","text":null,"file":"https://enem.dev/2016/questions/49/b6ee57bb-4657-4507-b4dd-d3a90d0fdf5c.png","isCorrect":false},{"letter":"B","text":null,"file":"https://enem.dev/2016/questions/49/83020533-7aa3-43c8-8ecb-1c935d334df9.png","isCorrect":false},{"letter":"C","text":null,"file":"https://enem.dev/2016/questions/49/0be3b2b3-3e5f-4e97-b33a-eba2bbdf9ad6.png","isCorrect":false},{"letter":"D","text":null,"file":"https://enem.dev/2016/questions/49/8d73abe7-f8be-486d-9404-91eca4acf47b.png","isCorrect":true},{"letter":"E","text":null,"file":"https://enem.dev/2016/questions/49/18d92fb3-eac0-47f2-b405-898112bbce22.png","isCorrect":false}]}