Two sources of light are coherent if they have same frequency and with a constant phase relationship
70) Two sources of light are coherent if they have
Answer is:
same frequency and with a constant phase relationship
Explanation:
Related Optics MCQ with Answers
Answer is:
the sources are coherent
Explanation:
Interference effects of light from two sources can be observed if the sources are coherent
Answer is:
An integral multiple of wavelength
Explanation:
If we have two coherent sources 'S1 and S2' vibrating in phase, then for an arbitrary point P constructive interference is observed whenever the path difference is integral multiple of wavelength.
Answer is:
comparable to the wavelength???of the signal (at least??4)
Explanation:
To radiate signals with high efficiency, the antennas should have a size comparable to the wavelength???of the signal (at least??4)
Answer is:
attenuates the radiated signal as a result of energy absorption by it
Explanation:
Ground Wave propagation?is a method of radio frequency?propagation?that uses the area between the surface of the earth and the ionosphere for transmission. Theground wave?can?propagate?a considerable distance over the earth's surface particularly in the low frequency and medium frequency portion of the radio spectrum.