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What is the focal point

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. 3,757 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. 651 views
What is the focal point also known as?Choose only ONE best answer. A End of near zone for a crystal B Far field after the focal
1. 1 answer
2. 30 views
What is the focal point also known as?Choose only ONE best answer. A End of near zone for a crystal B Region with best lateral
1. 1 answer
2. 30 views
What is the focal point also known as?Choose only ONE best answer. A End of near zone for a crystal B Far field after the focal
1. 1 answer
2. 38 views
What is the focal point also known as?Choose only ONE best answer. A End of near zone for a crystal B Region with best lateral
1. 1 answer
2. 33 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. 36 views
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. 661 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. 1,448 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. 567 views