5. This is a device that emits a great deal of light in a very narrow beam of
radiation.
A. Optical fiber B. Laser
C. Ordinary flashlight D. Cellphone
6. Which of the following idea, light can travel faster?
A. In the water B. Inside a classroom C. In the air D. Inside an office
radiation.
A. Optical fiber B. Laser
C. Ordinary flashlight D. Cellphone
6. Which of the following idea, light can travel faster?
A. In the water B. Inside a classroom C. In the air D. Inside an office
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Answer:
5. B LASER
6. B Inside a classroom
Explanation:
5. Lasers emit light that is highly directional. Laser light is emitted as a relatively narrow beam in a specific direction.
6. Inside a classroom