Archimedes
Principle states that whenever a body is partially or completely immersed in a liquid it experiences an outward force (called buayant force or upthrust) which is equal to the weight of
A Problem from Optics – Reflection of light
Convex and concave mirrors have same radii of curvature R. The distance between the mirrors is 2R. At what point on the common optical axis of the mirrors should a point source of light A be placed