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:
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:
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