wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A source of light is located from a convergent lens of focal length f=30 cm at a distance double the focal length of the convergent laws. At what distance from the lens should a flat mirror be placed so that the rays reflected from the mirror are parallel after passing through the lens for the second time. (in cm)

A
10 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
25 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
45 cm
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
60 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 45 cm

x=(2f+2f)f2=45 cm

flag
Suggest Corrections
thumbs-up
0
similar_icon
Similar questions
View More
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Thin Lenses: Point Objects
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon