What is the use of Gaussian surface ? Also, mention the importance of Gauss' theorem.

What do you mean by Gaussian surface ?

Mention the economic importance of honey.

What do you mean by Gaussian surface ? What is the Gaussian surface for a line charge ? Apply Gauss theorem to find an expression for electric field near a line charge of linear charge density lamda

Explain what is a biofertiliser. Describe its types and also mention the importance of the use of biofertilisers.

Mention the origin and importance of T-cells.

Predict and explain Gaussian surface A has twice the area of Gaussian surface B. Both surfaces enclose the same charge Q. Choose the best explanation from the following. (a) Gaussian surface B is closer to the charge, since it has the smaller area. It follows that it has the greater electric flux. (b) The two surfaces enclose the same charge and hence they have the same electric flux. (c ) Electric flux is proportional to the area Therefore , Gaussian surface A has the greater electric flux.

Predict and explain Gaussian surface A has twice the area of Gaussian surface B. Both surfaces enclose the same charge Q. Is the electric flux through surface A greater than, less than or the same as the electric flux through surface B ?