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Landazel

A girl was playing with a thin beam of light from her laser torch must by directing itfrom different directions on a convex lens held vertically. She was surprised to see that in a particular direction the beam of light continues to move along the same direction after passing through the lens. State the reason for this observation.​

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303 cents Rodion
Answer:

The beam passed through the optical centre of the lens,i.e it's angle of incidence to the horizontal plane parallel to the ground containing the optical centre was 0.

So no deviation took place.

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Rodion
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