A convex mirror is used for rear view on a automobile has a radius of curvature 3m .If a bus is located at 5cm from this mirror.find the position nature
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R=+3m⇒f=
2
+3
m
U=−5m
By Mirror formula:
v
1
+
u
1
=
f
1
⇒
v
1
+
(−5)
1
=
5
2
⇒
v
1
=
3
2
+
3
1
v
1
=
15
13
⇒v=
13
15
≃1.1538m behind the mirror
m=
h
o
h
I
=−(
u
v
)⇒h
I
=(
u
−v
)h
o
h
I
=(
13
15
×
(1.5)
1
)h
o
h
I
=
13
3h
o
ie. diminished & virtual & erect
2
+3
m
U=−5m
By Mirror formula:
v
1
+
u
1
=
f
1
⇒
v
1
+
(−5)
1
=
5
2
⇒
v
1
=
3
2
+
3
1
v
1
=
15
13
⇒v=
13
15
≃1.1538m behind the mirror
m=
h
o
h
I
=−(
u
v
)⇒h
I
=(
u
−v
)h
o
h
I
=(
13
15
×
(1.5)
1
)h
o
h
I
=
13
3h
o
ie. diminished & virtual & erect
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