Question

3. Fill in the blanks:
a) Radius of curvature is
of the focal length of lens.
b) A ray directed towards the centre of curvature
its path.
c) The normal is always
to the surface of mirror.
d) __
image can't obtained on the screen.
e) Dentists use
mirror to get magnified image of the teeth.​

Answer 1

Answer:

a. half

b.retraces

c.perpendicular

d.virtual

e.concave