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glowbaby123
18.07.2019 •
Physics
Determine the power of corrective contact lenses for a) a hyperopic eye with near point at 50 cm, b) a myopic eye with far point at 50 cm
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Ответ:
Part a)
Part b)
Explanation:
Part a)
As we know that Far sighted person has near point shifted to 50 cm distance
so he is able to see the object 50 cm
and the person want to see the objects at distance 25 cm
so here the image distance from lens is 50 cm and the object distance from lens is 25 cm
now from lens formula we have
Now we know that power of lens is given as
Part b)
As we know that near sighted person has far point shifted to 50 cm distance
so he is able to see the object 50 cm
and the person want to see the objects at large distance so here the image distance from lens is 50 cm and the object distance from lens is infinite large
now from lens formula we have
Now we know that power of lens is given as
Ответ:
Hello,
The correct answer is
B) Place the boxes 10 cm apart.
Hope this helps
**(Vanessa)**