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AP EAMCET Engineering 21 Apr 2019 Shift 1 Paper
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© examsnet.com
Question : 102
Total: 160
A girl of height 150 cm with her eye level at 140 cm stands in front of a plane minor of height 75 cm fixed to a wall. The lower edge of the mirror is at a height of 85 cm above her feet level. The height of her image the girl can see in the min or is
130 cm
140 cm
120 cm
150 cm
Validate
Solution:
The position of a girl in front of a plane mirror is shown below.
From the property of the triangle,
tan
θ
=
P
M
1
O
P
=
I
1
I
2
O
P
1
x
2
a
=
140
−
85
a
x
=
110
c
m
The maximum height seen by the girl is calculated as
H
=
110
+
10
=
120
c
m
© examsnet.com
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