An object is placed at a distance of 30cm from a concave lens of focal length 15cm . List four characteristics of the image formed by lens . Draw Ray diagram.
Answers
Answered by
12
u=30cm
f=15cm
object is at c
same size
image will be at c
if it is a convex lens,then the object is real and inverted
f=15cm
object is at c
same size
image will be at c
if it is a convex lens,then the object is real and inverted
Answered by
17
According to the question,
U=-30cm f= -15cm
1/f=1/v-1/u
1/v=1/f+1/u
on substituting v=-10cm
m=v/u
m=-10/-30
m=1/3=.33
so the magnification is positive so it is a virtual erect image .
m isless than 1 so the image is diminished .
and v is negative so the image is formed on the same side of the lens
Hope it will help you.
U=-30cm f= -15cm
1/f=1/v-1/u
1/v=1/f+1/u
on substituting v=-10cm
m=v/u
m=-10/-30
m=1/3=.33
so the magnification is positive so it is a virtual erect image .
m isless than 1 so the image is diminished .
and v is negative so the image is formed on the same side of the lens
Hope it will help you.
Attachments:
Similar questions