FOUR PART QUESTION. The radius of curvature of a spherical concave mirror is 24
ID: 1566242 • Letter: F
Question
FOUR PART QUESTION. The radius of curvature of a spherical concave mirror is 24 cm.
9.) When an object is positioned 90 cm from the mirror, give the image distance. (Express your answer in cm)
10.) When a 20-cm-tall object is positioned 90 cm from the mirror, give the image height. (Express your answer in cm)
13.) When a 20-cm-tall object is positioned 140 cm from the mirror, give the image distance. (Express your answer in cm)
14.) When a 20-cm-tall object is positioned 140 cm from the mirror, give the image height. (Express your answer in cm)
Explanation / Answer
9)
object distance s = 90 cm
from mirror equation
1/s + 1/s' = 2/R
1/90 + 1/s' = 2/24
image distance s' = 13.8 cm
=================
(10)
image height/object height = s'/s
image height = 20*13.8/90 = 3.1 cm
--------------
13)
object distance s = 140 cm
from mirror equation
1/s + 1/s' = 2/R
1/140 + 1/s' = 2/24
image distance s' = 13.125 cm
=================
(14)
image height/object height = s'/s
image height = 20*13.125/140= 1.875 cm
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.