Q.11 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 advise?

Her teacher advised her not to do so because of the intensity of the laser light is very high which is harmful to the human eyes.

It can cause damage to the retina and which can lead to permanent blindness.

Hence, it is also advisable not to look at a laser beam directly.