Question

A. Define the terms: a ray of light and a beam of light.
B. State two factors which affect the size of the image formed in a pinhole camera.

Answer 1

A. The light traveling in any one direction in a straight line is called a ray of light. A group of light rays given out from a source is called a beam of light.

B. Factors affecting the size of the image.

1. The distance of the screen from the pinhole

2. The distance of the object in front of the pinhole.