Question

A 10 cm object is placed 4.32 cm from a convex lens, which has a focal length of 12 cm. Find the Di. What type of image was produced?

Answer 1

Explanation:

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Answer 2

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A 10 cm object is placed 4.32 cm from a convex lens, which has a focal length of 12 cm. Find the Di. What type of image was produced?

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Focal length = 12 cm = f

Distance of object lens = u = -18 cm

Object height = h = 10 cm

Convex lens :

\frac{1}{v}-\frac{1}{u}=\frac{1}{f}

\frac{1}{v}=\frac{1}{f} + \frac{1}{u}

\frac{1}{v}=\frac{1}{12} + \frac{1}{(-18)}

v = 36cm

v = 36cm

m = \frac{v}{u}=\frac{h'}{h}

m = \frac{36}{-18}=\frac{h'}{10}

h' = -20cm (size of the image)

Nature of the image is Real and inverted.

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