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
ELECTRONIC DEVICES
Question #94076
Back to Home
View All ELECTRONIC DEVICES Questions
46 Views
Question
What is the power of a concave lens of focal length 40 cm?
A. +2.5 D
B. –2.5 D
C. +4.0 D
D. –4.0 D
Check Answer
Share on Twitter
Share on Facebook
Copy Link
Related Questions
What is true about the number of electrons and holes in an intrinsic semiconductor?
40
What is the primary reason for reverse current in a diode?
48
Which of the following is the basic building block of many semiconductor devices like diodes and tra...
24