Flashlights use total internal reflection by using a light bulb as a source of light. The light bounces off of the lenses located underneath the light bulb. ... When The incoming rays travel parallel to one another and reflects off a smooth surface, the Reflected ray is the same as the incident ray.
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Answer:
Flashlights use total internal reflection by using a light bulb as a source of light. The light bounces off of the lenses located underneath the light bulb. ... When The incoming rays travel parallel to one another and reflects off a smooth surface, the Reflected ray is the same as the incident ray.
Answer:
they are used produce strong rays and wider light rays