Laser Hair Removal Written Test 2025 – 400 Free Practice Questions to Pass the Exam

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What percentage of UV radiation that reaches the Earth is composed of UVA rays?

75%

85%

95%

UVA rays make up about 95% of the UV radiation that reaches the Earth's surface. This is because UVA rays have longer wavelengths than UVB and UVC rays, allowing them to penetrate deeper into the skin. Therefore, options A, B, and D are incorrect as they do not accurately represent the high percentage of UVA rays in the UV radiation that reaches the Earth.

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