Mention two precautions that should be taken while doing experiment on tracing path of ray of light
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The two precautions that should be taken while doing experiment on tracing path of ray of light are:
1. Make sure Glass of slab is clean and it must be free from air bubbles.
2. Also,the angle of incidence should lie between 30° and 60°.
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1. Make sure Glass of slab is clean and it must be free from air bubbles.
2. Also,the angle of incidence should lie between 30° and 60°.
plz mark it as brainlist
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