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 #89052
Back to Home
View All OPTICS Questions
31 Views
Question
If the power of a lens is +2.0 D, what is its focal length in metres?
A. +2.0 m
B. +0.5 m
C. -0.5 m
D. -2.0 m
Check Answer
Share on Twitter
Share on Facebook
Copy Link
Related Questions
Which of the following is NOT a law of refraction?
27
According to Snell's law, what is the term for the constant ratio of sin i to sin r?
21
In the formula n21 = sin((A+Dm)/2) / sin(A/2) for a prism, what does 'n21' represent?
33