Gurmit wanted to perform Activity 16.8 using a laser torch. Her teacher advised her not to do so.

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 advise?

Answer: Intensity of laser beam is very high, as it carries large amount of energy. It is harmful for eyes and can cause permanent damage. One should not

look laser beam directly or for a longer period.