Ultraviolet (UV) radiation can be subdivided into three regions: UVA, UVB, and UVC, based on their energy. What are the minimum and maximum values of wavelength in the UVA region

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

The most important difference between a wedge and an inclined plane is a. their size b. their shape c. how they are used d. what they are made of

The plum pudding model of the atom state that ?