A concave mirror has a radius of curvature of 1.2 m and a person stands in a front of it at a distance of 40 cm from the mirror where is the image of the person formed?
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Explanation:
ANSWER
Since radius of curvature is 1.2m i.e. 120cm.
Therefore focal length=−60cm
From mirror formula
v
1
+
u
1
=
f
1
−35
1
+
u
1
=
−60
1
u
1
=
35
1
−
60
1
u
1
=
420
12−7
u=84cm
Image height=
84
12
×35=5cm
Thus image height will be 5 cm.
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