wiz-icon
MyQuestionIcon
MyQuestionIcon
13
You visited us 13 times! Enjoying our articles? Unlock Full Access!
Question

A diverging lens with magnitude of focal length 25cm is placed at a distance of 15cm from a converging lens of magnitude of focal length 20cm. A beam of parallel light falls on the diverging lens. The final image formed is :

A
Real and at a distance of 6cm from the convergent lens.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
Real and at a distance of 40cm from convergent lens.
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
Virtual and at a distance of 40cm from convergent lens.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Real and at a distance of 40cm from the divergent lens.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A Real and at a distance of 40cm from convergent lens.
For concave lens,

1f1=1V11u1

125=1V11

V1=25cm

For Convex lens

1f2=1V21u2

120=1V21(2515)

120=1V2+140

1V2=120140

V2=40cm

So, answer is (b)

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Dispersion of Light Tackle
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon