Explain the formation of image in eyes.

Explain the formation of Ionic bond in NaCl.

Explain the formation of BeCl2 on the concept of hyridisation.

Explain the formation of (i) water gas (ii) producer gas. Give their uses.

Explain the formation of scum when hard water is treated with soap.

Explain the formation of scum when hard water is treated with soap

Draw the ray diagram for the formation of image in case of a concave mirror when the object is placed at the centre of curvature of a mirror.

The branch of optics dealing with the formation of images using the concept of straight line propagation of light is called :

Explain the formation and fate of primary layers in the human embryo.