Question

Gurmit wanted to perform activity 16.8 using a laser torch. Her teacher advised her not to do so. Can you explain the basis of the teacher’s advice?

Answer 1

In this question use the concept that, the laser devices that have the intensity of light more than the five milliwatts can cause many problems, eye problems can occur, skin related problems and problems may occur.

Complete step by step answer
In this question, we are given that Gurmit wanted to perform an activity using a laser torch.
As we know that the laser pen or the laser pointer is a handheld device with a power source. A laser pen makes a potential signaling tool, lasers are able to produce a bright signal of light even in the daylight.
When the power of the laser’s pointer is greater than the laser pointer will cause serious eye injuries and the laser point may burn the skin temporarily or permanently.
As the power of the laser pointer or pen increases above five milliwatts, then, we can see the immediate action of the laser pen that skin related problem can occur quickly.
The laser pointer or pen less than the five milliwatts of output power can be directed at someone’s eye.
So, the person’s eye may be caused severe damage to vision. Retinal problems may occur. So, we should not use the laser pointer or pen.
The Laser torch has the very high intensity of light as compared to the normal torch. The light of the laser torch is concentrated in a very narrow beam and the beam of light is highly energetic.
So, the laser torch will damage the Gurmit’s friend’s eye when the light is directly projected.

Therefore, the teacher advises Gurmit not to use the laser torch in his friend’s eye.

Note
As we know that some precaution needs to be taken while using the laser, that is we should use the laser pen or torch laser devices out of reach of children. The laser light or laser pen is dangerous to use for the children that may cause several problems.