Question

mark the following statements as true or false. lasers can lead to hazards such as tissue burns, eye damage and igniting flammable materials. true false lasers are devices which emit light through optical amplification. true false lasers can be left unattended as long as they are not turned on. true false

Explanation:

• Lasers emit high - intensity light. High - intensity light can cause tissue burns (due to heat), eye damage (as the eye is sensitive to light, especially intense light), and can ignite flammable materials (if the energy is sufficient). So the first statement is True.
• By definition, a laser (Light Amplification by Stimulated Emission of Radiation) is a device that emits light through optical amplification. So the second statement is True.
• Lasers, even when not turned on, may have residual energy, or there could be accidental activation (e.g., due to electrical malfunctions, etc.). So they should not be left unattended. So the third statement is False.

Answer:

1. True
2. True
3. False