wiz-icon
MyQuestionIcon
MyQuestionIcon
3
You visited us 3 times! Enjoying our articles? Unlock Full Access!
Question

When an object is kept at a distance of 30 cm from a concave mirror, the image is formed at a distance of 10 cm. If the object is moved with a speed of 9 cm s1 the speed with which the image moves is

A
0.1cms1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
1cms1
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C
3cms1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
9cms1
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is C 1cms1
1u+1v=1f
duu2dvv2=0 or dvv2duu2
or dv=v2u2du
=10×1030×30×9 cms1=1 cms1.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Ray Diagrams of Spherical Mirrors
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon