Content protected from screenshots
GKFix.in
Current Affairs
General Knowledge
Categories
Concept Builder Quiz
About Us
Start Quiz
GKFix.in
Home
Current Affairs
General Knowledge
Categories
Concept Builder Quiz
Start Quiz
GKFix MCQ Question
Test your knowledge and learn something new
Home
OPTICS
Question #88123
Back to Home
View All OPTICS Questions
23 Views
Question
If a lens combination has an effective focal length of 20 cm, what is its power in dioptres?
A. +0.2 D
B. +5 D
C. +20 D
D. -5 D
Check Answer
Share on Twitter
Share on Facebook
Copy Link
Related Questions
What type of image is formed by a plane mirror?
19
What is the definition of linear magnification (m) in terms of the object height (h) and image heigh...
8
What is the magnification when object is at focus?
21
What is the name of the newly launched satellite by ISRO aimed at improving weather forecasting and ...
(Current Affairs)
16
Which Indian bowler received a demerit point from the ICC for aggressive behavior during the first O...
(Current Affairs)
10