If microwaves, X rays, infracted, gamma rays, ultra-violet, radio waves and visible parts of the electromagnetic spectrum by M, X, I, G, U, R and V, the following is the arrangement in ascending order of wavelength :

A lamp emits monochromatic green light uniformly in all directions. The lamp is 3% efficient in converting electrical power to electromagnetic waves and consumes 100 W of power. The amplitude of the electric field associated with the electromagnetic radiation at a distance of 5 m from the lamp will be nearly :

Match the List - I (Phenomenon associated with electromagnetic radiation) with List - II (Part of electromagnetic spectrum) and select the correct code from the choices given the lists :

List - I		List - II
(I)	Doublet of sodium	(A)	Visible radiation
(II)	Wavelength corresponding to temperature associated with the isotropic radiation filling all space	(B)	Microwave
(III	Wavelength emitted by atomic hydrogen in interstellar space	(C)	Short radiowave
(IV)	Wavelength of radiation arising from two close energy levels in hydrogen	(D)	X - rays

An electromagnetic wave of frequency 1 $$ \times $$ 10¹⁴ hertz is propagating along z - axis. The amplitude of electric field is 4 V/m. If $$ \in $$₀ = 8.8 $$ \times $$ 10^$$-$$12 C²/N-m², then average energy density of electric field will be :