Question

3. A conver lens is of focal length 30cm. Find the di
stance where the object should be blaced in front
of lens & so that the image is formed 10 cm from
the lens ? what is the magnification?
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Answer 1

Answer:

Answer:

The image is real and diminished.

Explanation:

Let's write down the lens formula below.

1/f = 1/u + 1/v

Where:

f = focal length

u = Object distance

v = Image distance

In our case we have:

f = 30 cm

v = 30 cm

1/30 = 1/u + 1/30

1/u = 1/30 - 1/30

1/u = 1/0

Object is placed at infinity.

The characteristics of the image formed is therefore:

real

inverted

highly diminished

Answer 2

Answer:

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