What is the image distance of an object placed at a dista...
What is the image distance of an object placed at a distance of 2f from a converging lens of focal length f?
f/4
f/2
f
2f
4f
Correct answer is D
No explanation has been provided for this answer.
Which of the following quantities are dimensionally independent? I. Dielectric constant ...
Which of the following factors can affect the speed of sound in air? i. The temperature of the su...
Which of the following factors affects the speed of sound in air? i. Temperature ii. pressure i...