The effect of earth's magnetic field on radiowaves is minimum when – McqOptions

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1.	The effect of earth's magnetic field on radiowaves is minimum when
A.	the electric field lines of radio waves and flux line of earth's magnetic field are in the same direction
B.	the electric field lines of radio waves and flux lines of earth's magnetic field are at right angles
C.	the electric field lines of radiowaves and flux lines of earth's magnetic field oppose each other
D.	both (b) and (c)
Answer» B. the electric field lines of radio waves and flux lines of earth's magnetic field are at right angles

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