Question

(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.​

Answer 1

Answer:

diverging lens is that

Answer 2

Answer:

1) Converging lens

2) Because the light ray pass through the Optical centre

Explanation:

1) We know that the magnification of a real image is always -ve. So the image is real and real image is formed by CONVEX lens which are known as Converging lens.

2) We know that if a light ray passes through the Optical centre it will not get refract and will move along the same direction.