An object is placed 15 cm away from a convex mirror of focal length 45 cm
.Calculate the position of image and its magnification.
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Answer:
Object distance(u) =-15cm
Focal length (f)= 45cm
1/v+1/u=1/f
1/v=1/f-1/u
1/v=1/45-(-1/15)
1/v=1/45+1/15
1/v=1/45+3/45
1/v=4/45
1/v=1/11.25
v=11.25cm
Magnification (m)=-v/u
=-11.25/15
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