Total # Posts: 3
A convex mirror forms an image of half the size of the object. When it is moved 15cm away from the object the size of the image becomes 2/5times that of the object. Find the focal length of mirror
September 10, 2016
explane the term calomal eletrode
July 22, 2015
what is the physical ane chemical differance bn NaBR ane KBr?
July 26, 2012