Assignment 36 Problem 3 Part C What is the distance between the final image and
ID: 2039913 • Letter: A
Question
Assignment 36 Problem 3 Part C What is the distance between the final image and the lens? Express your answer to two significant figures and include the appropriate units 8.57 cm Submit Previous Ans t Ans Incorrect: Try Again: 4 attempts remaining Part D What ia the height of the final image? Figure 1 of 1 Express your answer to two significant figures and include the appropriate units -10cm-30m 1.71 cim 1.0 cm Submit 5.0 cm 5.0 cm X Incorrect: Try Again; 4 attempts remaining lens Provide FeedbaclkExplanation / Answer
C)
for lens
f1 = 10 cm
u1 = 5 cm
let v1 is the image distance
use, 1/u1 + 1/v1 = 1/f1
1/v1 = 1/f1 - 1/u1
1/v1 = 1/10 - 1/5
v1 = -10 cm
magnification, m = -v1/u1 = -(-10)/5 = +2
the image of the lens acts as the object for the mirror.
for mirror
f2 = -30 cm
u2 = -(10 + 5) = -15 cm
let v 2is the image distance from mirror
use,
1/u2 + 1/v2 = 1/f2
1/v2 = 1/f2 - 1/u2
1/v2 = 1/(-30) - 1/(-15)
v2 = 30 cm
magnification, m = -v2/u2
= -30/(-15)
= 2
distance between the final image and the lens = 30 - 5
= 25 cm <<<<<-----Answer
D) total magnification, m = m1*m2
= 2*2
= 4
image height = m*object heght
= 4*1
= 4.0 cm <<<<<<<<--------------Answer