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 #94034
Back to Home
View All ELECTRONIC DEVICES Questions
33 Views
Question
A concave mirror has a radius of curvature of 40 cm. What is its focal length?
A. +20 cm
B. –20 cm
C. +40 cm
D. –40 cm
Check Answer
Share on Twitter
Share on Facebook
Copy Link
Related Questions
What is the behavior of the depletion region under reverse bias?
26
What is the main reason for using a filter capacitor in a rectifier circuit?
33
What happens to electrons in the valence band of a semiconductor when heated?
25