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
ELECTRONIC DEVICES
Question #94076
Back to Home
View All ELECTRONIC DEVICES Questions
23 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
How does the design of a microscope ensure maximum light collection?
15
Why is the donor energy level close to the conduction band in n-type semiconductors?
15
What happens to the drift current under forward bias?
26
Which Indian astronaut was conferred with the Ashoka Chakra, India's highest peacetime gallantry awa...
(Current Affairs)
5
What was the cause of the wall collapse near Humayun’s Tomb in Delhi that killed six people?
(Current Affairs)
39