an object 5cm tall is placed at a distance of 15cm in front of a concave mirror of focal length 12cm find the postion,nature and size of the image formed how would the postion and nature of the image change if the object is moved 5cm towards the mirror
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Answer:
Explanation:
u=−15cm
f=−10cm
h=1cm
From mirror formula
f
1
=
u
1
+
v
1
v
1
=
f
1
−
u
1
v
1
=
−10
1
−
−15
1
v=−30cm
The image is formed at a distance 30cm on the left side of the mirror from the pole.
m=
h
h
′
=
u
−v
h
′
=−1×
−15
−30
h=−2cm
The image size is 2cm and it is real and inverted.
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