Question

6. A dentist uses a mirror of radius of curvature 4cm. He puts his mirror at a distance 1cm from a damaged tooth.calculate the magnification. ( 2marks)
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Answer 1

Answer:

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Explanation:

Magnification m=

u

v

Now object in front of mirror so u=−ive

4=+

0.6

v

v=

10

4×0.6

=

5

12

Now

r

1

=

v

1

+

u

1

=

v

1

−

u

1

=

12

5

−

6

10

r=−1.60

So it is concave