Draw a diagram showing the temperature of various layers of water in an ice covered pond.

Draw diagrams to show the formation of beats?

Draw a simple diagram showing the energy flow in a food chain.

Draw a diagram to show the various modes of vibration of a stretched string.

Draw a simple diagram showing a food chain.

Draw a ray diagram showing the path of rays of light when it enters with oblique incidence (i) from air into water , (ii) from water into air.

Explain various layers covering a bacterial cell.

Draw a simple ray diagram showing the formation of a primary rainbow.

Draw a ray diagram showing the formation of image of a point object by a plane mirror.

Draw a diagram to show refraction of a plane wave front incident in a convex lens and hence draw the refracted wave front

Draw a diagram to show the associative law of vector addition .