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 teachers advise?



In Activity 16.8, we throw light on our friend’s eye with a torch, and observe the size of the pupil.


Laser torch has laser light.

Laser light has very high intensity and hence it is harmful for the human eyes.

It can cause damage to the eyes and can even lead to blindness. 

Thus, we should avoid looking at a laser beam directly.

  1. Class 8
  2. Chapter 16 Class 8 - Light

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CA Maninder Singh's photo - Founder at Teachoo
CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo