#1 A small object is placed to the left of a convex lens and on its optical axis
ID: 1395391 • Letter: #
Question
#1 A small object is placed to the left of a convex lens and on its optical axis. The object is 30 cm from the lens, which has a focal length of 41 cm. If the object is moved to a position 48 cm to the left of the lens, what will the image position be? (A positive value for p, or position, means the image is on the right side of the lens.)
p = ? cm
#2 Describe the nature of this new image. (Select all that apply.)
virtual
real
upright
inverted
enlarged
reduced
on the left side of the lens
on the right side of the lens
Explanation / Answer
by lens equation
1/p + 1/o = 1/focal length
1/p + 1/48 = 1/41
p = 281.14 cm
new image will be
real
inverted
enlarged
on the right side of the lens
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