Question

draw concave and convex mirror and explain the behaviour of light on their surface ?​

Answer 1

Answer:

International standards are one way of overcoming technical barriers in international commerce caused by differences among technical regulations and standards developed independently and separately by each nation, national standards organization, or company.

Answer 2

Explanation:

Convex lenses bring light rays together at a point called the focus so they form real images. Concave lenses spread light rays apart so they form virtual images.