6) Draw a neat ray diagram for a concave lens of focal length 3 cm and object is placed at 4.5
cm from the lens. Mention two uses of concave lens.
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Answer:
1. Concave lenses are used in making spectacles for people who cannot see distant objects clearly.
2. Concave lenses are used in galilean telescope.
Step-by-step explanation:
A concave lens is thinner in the middle and thicker at the edges.
It is a diverging lens.
The image formed is always virtual, erect and small than the size of the object.
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