Question

Numerical Problems:
1. Find the position, size and nature of the image of an object 5 cm high which is placed 10 cm in
front of a convex lens of focal length 6 cm.

2. Find the position and nature of an image formed by a convex lens of focal length 15 cm when
an object 6 cm high is placed 30 cm in front of the lens.

3. The lens of a camera has a focal length of 10 cm. What must be the distance between the lens and
the film in order to photograph objects at (a) infinity (b) 20 cm from the lens.

4. An object 4 cm high is placed 15 cm from a convex lens of focal length 5 cm. Draw a ray diagram
on graph paper (full size or scale) and find the position, size and nature of the image.
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Answer 1

Answer:

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Explanation:

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