Which ancient idea of the nature of light did isaac newton build upon? light is a wave or disturbance that travels through spaces in the air. light is a stream of rays that comes with great velocity from the eyes of an observer. light is a substance through which particles flow from a light source.

An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

Debris produced by mining is called

12. ritu obtained a distinct image of a distant tree on the screen with the of a concave mirror.to find the focal length of the mirror she has to measure the distance between: (a) mirror and the tree. (b) screen and the tree.(c) mirror and the screen. (d) mirror and tree as well as between screen and the tree.