4. Answer the following questions:
a.
b.
Write a formula of lens and magnification of lens.
C.
d.
e.
f.
نعمه
the object placed? Draw a ray diagram.
What is the function of the retina?
How does the eye
. control the amount of light entering it?
What type of
What is myopia? How is it corrected?
What is hypermetropia? How is it corrected?
An object is
Sanjay sees distant objects comfortably but he wears spectado
An object is
book.
Find
i. What defect of vision does he have?
ii. Which type of spectacles should he use?
wil. Is the
i.
Draw a diagram to show how a convex lens forms a magufuli
A convex lens forms a real image of the same size as that of
e of defect of vision does she have? Sketch a ray diagram for