Select from the following for the next question: A real, upright and larger than
ID: 1497498 • Letter: S
Question
Select from the following for the next question: A real, upright and larger than the object B real, Inverted and smaller than the object C virtual, Inverted and larger than the object D virtual, upright and larger than the object E virtual, inverted and smaller than the object F real, Inverted and larger than the object G real, upright and smaller than the object H virtual, upright and smaller than the object An object is placed 14.5 cm away from a converging lens. The lens has a focal length describes the Image.Explanation / Answer
The expression that controls the imaging lenses is
1/f = 1/o + 1/i
where
f is the focal length
o is the distance from the lens to the object
i is the distance from the lens to the image
the image is real if the light rays pass through it
the image is virtual if the extensions of the rays pass through it
let's look at this case
Data
o = 14.5 cm
f = 10.0 cm
o > f
1/i = 1/f - 1/o
1/i = 1/10 – 1/14.5
1/i = (14.5 – 10)/ ( 14.5 10)
1/i = 4.5 /145
i = 32.2 cm
i is positive
m= - i/o
m = - 32.2/ 14.5
m = - 2.2
i is positive so the image is real,
like this on the other side of the lens is INVERTED
the magnicacion is greater than 1 so the image is larger than the object
when we compare with the expressions the correct is F
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