A make up or shaving mirror provides 5 times magnified virtual image. A person positions his
face 15cm away from the mirror. Determine [5]
a) The type of image formed.
b) The location of person’s face in the mirror.
c) The focal length of the mirror.
d) The radius of curvature of the mirror.
e) The type of mirror.
Answers
Answered by
2
Answer:
The only mirror that forms the magnified virtual image is the concave mirror.
m=
u
−v
=2⟹v=−2u
And, u=−20cm
v
1
+
u
1
=
f
1
⟹
40
1
+
20
−1
=
f
1
⟹f=−40cm
Hence, radius of curvature is R=2f=80cm and the mirror is concave.
Answered by
0
Answer:
80 cm
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