Content protected from screenshots
GKFix.in
General Knowledge
Categories
Concept Builder Quiz
About Us
Start Quiz
Home
My Profile
General Knowledge
Categories
Concept Builder
Start Quiz
Logout
GKFix MCQ Question
Test your knowledge and learn something new
Home
OPTICS
Question #88047
Back to Home
View All OPTICS Questions
63 Views
Question
A lens has a focal length of -0.25 meters. What is its power?
A. +4.0 D
B. -4.0 D
C. -0.25 D
D. +0.25 D
Check Answer
Share on Twitter
Share on Facebook
Copy Link
Related Questions
Why is the assumption of small apertures important in mirror equation derivation?
60
What kind of signals are transmitted through optical fibres?
65
Why must the critical angle of a prism material be less than 45° for a 90° reflection?
47