A convex mirror and a concave mirror of radius of curvature 10 m each are
placed 15 m apart facing each other. An object is placed midway between them
as shown in figure.
15 m
If the reflection first takes place in the concave mirror and then in another mirror
the position of the image formed after second reflection is
Answers
Explanation:
A convex mirror and a concave mirror of radius 10 cm each are placed 15 cm apart facing each other. An object is placed midway between them. If the reflection first takes place in the concave mirror and then in convex mirror, the position of the final image is
A
On the pole of the convex mirror
B
On the pole of the concave mirror
C
At a distance of 10cm from the convex mirror
D
At a distance of 5 cm from the convex mirror
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Correct option is
A
On the pole of the convex mirror
for concave mirror u=−7.5 ; f=−5
v
1
+
u
1
=
f
1
v
1
−
15
2
=
5
−1
v=−15
i.e, image is formed at pole of convex mirror for convex mirror , u=0 ;f=+5
v
1
+
u
1
=
f
1
v
1
+
0
1
=
5
1
v=0
so final image is formed at pole of convex mirror , hence option A is correct