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Gurmeet wanted to perform activity 16.8 …

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Gurmeet wanted to perform activity 16.8 using a laser torch her teacher advise her not to do so can you explain the basis of teachers advise
  • 2 answers

Preeti Dabral 1 year, 9 months ago

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 at laser beam directly or indirectly for a longer period.

Chhavi H 1 year, 9 months ago

What is gravitational force
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