(i) A lens produces a magnification of -0.5. Is this a converging or diverging lens? If
the focal length of the lens is 6 cm, draw a ray diagram showing the image formation
in this case.
(ii) A girl was playing with a thin beam of light from a laser torch by directing it
from 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 her observation. Draw a
ray diagram to support your answer.

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