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Question
Physics
What is the position and nature of image formed by lens combination shown in figure? (f1, f2 are focal lengths)
Q. What is the position and nature of image formed by lens combination shown in figure?
(
f
1
,
f
2
are focal lengths)
2298
178
JEE Main
JEE Main 2019
Ray Optics and Optical Instruments
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A
70
c
m
from point
B
at left; virtual
24%
B
40
c
m
from point
B
at right; real
10%
C
20/3
c
m
from point
B
at right , real
25%
D
70
c
m
from point
B
at right, real
41%
Solution:
For first lens
V
1
−
−
20
1
=
5
1
V
=
3
20
For second lens
V
=
3
20
−
2
=
3
14
V
1
−
3
14
1
=
−
5
1
V
=
70
c
m