Given below are two statements :
Statement I : A time varying electric field is a source of changing magnetic field and vice-versa. Thus a disturbance in electric or magnetic field creates EM waves.
Statement II : In a material medium, the EM wave travels with speed $$v = {1 \over {\sqrt {{\mu _0}{ \in _0}} }}$$. In the light of the above statements, choose the correct answer from the options given below.
Match List-I with List-II :
List - I | List - II | ||
---|---|---|---|
(a) | Ultraviolet rays | (i) | Study crystal structure |
(b) | Microwaves | (ii) | Greenhouse effect |
(c) | Infrared rays | (iii) | Sterilizing surgical instrument |
(d) | X-rays | (iv) | Radar system |
Choose the correct answer from the options given below :
Which is the correct ascending order of wavelengths?
If Electric field intensity of a uniform plane electromagnetic wave is given as $$E = - 301.6\sin (kz - \omega t){\widehat a_x} + 452.4\sin (kz - \omega t){\widehat a_y}{V \over m}$$. Then magnetic intensity 'H' of this wave in Am$$-$$1 will be :
[Given : Speed of light in vacuum $$c = 3 \times {10^8}$$ ms$$-$$1, Permeability of vacuum $${\mu _0} = 4\pi \times {10^{ - 7}}$$ NA$$-$$2]