ENEM 2017: Questão da Depilação a Laser (Comprimento de Onda Ideal) | Resolução de Gráfico

Welcome to the channel! In today's video, we're going to solve a question from the 2017 ENEM exam that scares many people because it has a graph with three different curves, but it's extremely simple when we apply the right logic: the question about Laser Hair Removal! You will learn how to analyze composite graphs and understand how the physics of wavelengths is applied in our daily lives and in aesthetic technology. 📝 CHECK OUT THE QUESTION STATEMENT: (ENEM 2017) Laser hair removal (popularly known as laser depilation) consists of applying a light source to heat and cause a localized and controlled lesion in the hair follicles. To avoid damaging other tissues, wavelengths are selected that are absorbed by the melanin present in the hair, but that do not affect the oxyhemoglobin in the blood and the water in the tissues of the region where the treatment will be applied. The figure shows how different wavelengths are absorbed by melanin, oxyhemoglobin, and water. What is the ideal wavelength, in nm, for laser hair removal? A) 400 B) 700 C) 1100 D) 900 E) 500 Official Answer: Letter B --- Subscribe to the channel and activate the bell to master ENEM Physics without stress! #Enem #EnemPhysics #Biophysics #Optics #EnemResolution #GraphInterpretation