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 #89053
Back to Home
View All OPTICS Questions
30 Views
Question
If the focal length of a lens is -0.25 m, what is its power in dioptres?
A. +4.0 D
B. +0.25 D
C. -0.25 D
D. -4.0 D
Check Answer
Share on Twitter
Share on Facebook
Copy Link
Related Questions
Why can a convex mirror never form a real image?
27
What is the sign of the focal length of a convex mirror in the Cartesian sign convention?
34
According to the sign convention mentioned, what are the signs of BC1 and DC2 for a double convex le...
10