Ask a New Question

If f is the focal

Two plus lenses have focal lengths in the ratio 3:1. When placed together in close contact the focal length of the combination
1. 0 answers
2. asked by Nikki
3. 648 views
I was asked to compare my measured focal length to my calculated focal length. My calculated focal length I figured out by using
1. 2 answers
2. asked by Lena
3. 551 views
Two plus lenses have focal lengths in the ratio 7:1. When placed together in close contact the focal length of the combination
1. 0 answers
2. asked by shaky
3. 692 views
FPA stands for what?Focal performance adjustment Focal plane array Focus positioning agent
1. 1 answer
2. 20 views
Which of the following adjustments would cause an image to change from real to virtual?a)moving the object from the focal point
1. 3 answers
2. asked by Hi
3. 3,738 views
What focal-length lens would you need to place next to a converging lens of focal length 29 cm to create an effective focal
1. 0 answers
2. asked by Jeanette
3. 549 views
Two converging lenses with the focal lengths of 40 cm and 20 cm are 10 cm apart. a 2.0-cm-tall object is 15 cm in front of the
1. 1 answer
2. asked by Ashley
3. 1,489 views
What region on either side of the focal point is considered arbitrary or imaginary?Choose only ONE best answer. A Near field and
1. 1 answer
2. 32 views
An object is placed in front of a concave mirror, 16.0 cm from the mirror's focal point. The image formed by the mirror is two
1. 0 answers
2. asked by Ted
3. 635 views
Which of the following statements is correct regarding the design concept of emphasis?A. Focal points in a room's architecture
1. 1 answer
2. asked by lucy
3. 1,435 views