A scientist used a lens with a 7cm focal length to focus light and create a holograph. The lens is 30cm from the 25cm tall image. How far from the lens is the object? What is the height of the object? Describe the image characteristics: real/virtual, inverted/erect, larger/smaller than the object.
Answers
Answered by
0
this is very simple
Answered by
0
1/f = 1/v - 1/u
1/7 = 130 -1/u
1/u =1/30-1/7
1/u = -23/210
u = -210/23
v/u= i/o
30/-210/23 = 25/o
-30×23/210×25
this shows that image is inverted ,magnified,
(the lens is not mentioned though)
1/7 = 130 -1/u
1/u =1/30-1/7
1/u = -23/210
u = -210/23
v/u= i/o
30/-210/23 = 25/o
-30×23/210×25
this shows that image is inverted ,magnified,
(the lens is not mentioned though)
Similar questions