Write the formula for refraction at a thin lens.

Define the term dispersion by a prism and give the reason for its occurrence .Write the formula for refractive index of the material of a prism in terms of the anle ofminimum deviation.

Write the formula of xylene.

Write the formula of dichromateion.

Write the formula of manganateion.

Write the formula for area of a circle.

Write formula for refraction of light from a single spherical surface.

Write the formula of glycerol.

write the formula for carbon dioxide?

Write formula for ferrous sulphate

Write the formula of ferrocyanide ion.