Why is the amount of the momentum transferred by the e.m. waves incident on the surface so small?

What are e.m. waves?How are they produced?

State essential properties of e.m. waves.

What is the velocity of e.m. waves in free space?

What does an e.m. wave consist of?

Why is there rich amount of carbon dioxide near the surface of earth ?

Write an expression for speed of e.m. waves in free space.

Show that the radiations pressure exerted by an EM wave of intensity I on a surface kept in vacuum is I//c .

A plane wave front AB propagating from denser medium (1)into a rarer medium (2) is incident on the surface P_1P_2 separating the two media as shown in the figure. Using Huygen's principle, draw the secondary wavelets and obtain the refracted wave front in the diagram.

The e.m.f. of the cell used in the main circuit of the potentiomter should be more than the potential diference to be measured. Why?