A beam of electrons is accelerated through a potential difference of 10 kv before entering a velocity selector. if the b-field o
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The image formed from the lens is real, inverted and enlarged
Explanation:
The magnification of a lens is given by:
(1)
where:
y' is the size of the image
y is the size of the object
q is the distance of the image from the lens
p is the distance of the object from the lens
For this lens, the magnification is
m = -1.6
We notice the following:
- The magnification is negative
- The magnification is larger than 1
Looking at eq.(1), we can therefore make the following conclusions:
- SInce and
, it follows that
, so the image is larger than the object
- Since and
, it follows that
(since y > 0 for convention): this means that the image is inverted
- Since and
, it follows that
(since p > 0 for convention): this means that the image is real
Learn more about lenses and mirrors here:
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