chapter 23 and 24 Two plane mirrors stand facing each other, 2.85 m apart, and a
ID: 1435147 • Letter: C
Question
chapter 23 and 24
Two plane mirrors stand facing each other, 2.85 m apart, and a woman stands between them. The woman faces one of the mirrors from a distance of 1.15 m and holds her left arm out to the side of her body with the back of her left hand facing the closer mirror.
(1.) What is the apparent position of the closest image of her left hand, measured perpendicularly from the surface of the mirror in front of her?
m behind the nearer mirror
(2.) What is the position of the next image?
m behind the nearer mirror
(3.) What is the position of the third closest image.
m behind the nearer mirror
Explanation / Answer
dtot= 2.85, d1=1.5,
so d2 = dtot - d1
d2 = 2.85 -1.5 = 1.35
d2=1.35
1.) What is the apparent position of the closest image of her left hand, measured perpendicularly from the surface of the mirror in front of her?
ans is =1.15 m behind the nearer mirror
(2.) What is the position of the next image?
=d1+2(d2)
= 1.15 + 2*(1.35)
= 3.85m behind the nearer mirror
3.) What is the position of the third closest image.
= 2(d1+d2)
= 2*(1.15+1.35)
= 5 m behind the nearer mirror
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