Which two colors of light combine to form the color maroon?

The peacock blue color is formed by the superposition of which two colors of light?

Which of the following are the primary colours of light?

What is the method of obtaining various colors by mixing primary colors in appropriate proportions called?

What are the two colors of light called whose mixture produces white light?

$(a)$ State the reasons which lead to hypermetropia. With the help of suitable diagrams,explain this defect of vision and its correction.
$(b)$ Draw a diagram of an experimental arrangement for observing the scattering of light in a colloidal solution. Name the two chemicals used in this activity.