| ENEM 2023 | Q92 - INFORMAÇÕES DIGITAIS — DADOS — SÃO GRAVADAS EM DISCOS ÓPTICOS, COMO CD E DVD

I am Felipe Filatte, a teacher and pedagogical coordinator, specializing in ENEM and university entrance exams. Here you will find commented solutions, focused on understanding the reasoning and gaining confidence in the exam. 🎁 FREE GIFT FOR THOSE PREPARING FOR THE ENEM (Brazilian National High School Exam) ENEM TRI Calculator Spreadsheet https://docs.google.com/spreadsheets/... 📂 LINK TO THE DRIVE WITH PREVIOUS EXAMS https://drive.google.com/drive/folder... STATEMENT Digital information — data — is recorded on optical discs, such as CDs and DVDs, in the form of microscopic cavities. The optical recording and reading of this information is performed by a laser, a monochromatic light source. The smaller the dimensions of these cavities, the more data is stored in the same area of ​​the disk. The limiting factor for data reading is the scattering of light by the diffraction effect, a phenomenon that occurs when light passes through an obstacle with dimensions on the order of its wavelength. This limitation motivated the development of lasers with emission at shorter wavelengths, making it possible to store and read data in increasingly smaller cavities. In which spectral region is the wavelength of the laser that optimizes data storage and reading on disks of the same area located? A) Violet. B) Blue. C) Green. D) Red. E) Infrared. Answer: ✅ Alternative A #enem #enem2023 #commentedquestions #physics #optics #wavemotion #diffraction #laser #wavelength #visiblespectrum #violetlight #professorfilatte #entranceexams #medicine #tri