U8_L5 Understanding Light Energy and Therapy

Question 1 of 5

1. Question

20 point(s)

What is the shortest wavelength of visible light?

Violet

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Red

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Question 2 of 5

2. Question

20 point(s)

What percentage of sunlight is made up of ultraviolet light?

5 percent

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60 percent

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Question 3 of 5

3. Question

20 point(s)

Select the correct statements about infrared light.

Infrared rays have longer wavelengths than visible light.

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Infrared lamps are used to accelerate hair coloring.

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Infrared light is used for ultraviolet germicidal irradiation.

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Question 4 of 5

4. Question

20 point(s)

What is the primary function of lasers in light therapy?

Light amplification by stimulated emission of radiation.

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To filter visible light into colors.

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Question 5 of 5

5. Question

20 point(s)

Which colors of LED light have specific therapeutic benefits?

Blue light

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Red light

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Yellow light

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Green light

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U8_L5 Understanding Light Energy and Therapy