![optics - Does 'focal length' mean something different with lenses and pinhole cameras? - Physics Stack Exchange optics - Does 'focal length' mean something different with lenses and pinhole cameras? - Physics Stack Exchange](https://i.imgur.com/Rmy2GPU.png)
optics - Does 'focal length' mean something different with lenses and pinhole cameras? - Physics Stack Exchange
![The pinhole camera Physics Homework Help, Physics Assignments and Projects Help, Assignments Tutors online The pinhole camera Physics Homework Help, Physics Assignments and Projects Help, Assignments Tutors online](http://physicsmax.com/wp-content/uploads/2014/08/1308.jpg)
The pinhole camera Physics Homework Help, Physics Assignments and Projects Help, Assignments Tutors online
![Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colors of the shirts in Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colors of the shirts in](https://byjus-answer-creation.s3.amazonaws.com/uploads/8293Physics_62b45c303f33572614ed605a.jpg_img_upload_solution_2022-07-29%2007:47:42.421578.png)
Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colors of the shirts in
![Question 20 Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the Question 20 Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the](https://byjus-answer-creation.s3.amazonaws.com/uploads/60e7df4424737982aa9fb83f_img_upload_solution_1646734456.png)
Question 20 Using a pinhole camera a student observes the image of two of his friends, standing in sunlight, wearing yellow and red shirt respectively. What will be the colours of the
![22. State two factors which affect the size of image formed in a pin hole camera. - Question 22, 5. Light, Selina - Physics - Class 6 | Brainly 22. State two factors which affect the size of image formed in a pin hole camera. - Question 22, 5. Light, Selina - Physics - Class 6 | Brainly](https://srv-supersonic-images.z-dn.net/editor_images/288d97b4-92d9-4f15-a7d7-3cc4edc4f890.png)