Questions in wave-optics

Select	Question
	By a monochromatic wave, we mean
	The similarity between the sound waves and light waves is
	The ratio of intensities of two waves is 9 : 1. They are producing interference. The ratio of maximum and minimum intensities will be
	A wave can transmit ...... from one place to another
	If the ratio of intensities of two waves is 1 : 25, then the ratio of their amplitudes will be
	Two identical light sources S1 and S2 emit light of same wavelength $\lambda$. These light rays will exhibit interference if
	Wave nature of light follows because
	If L is the coherence length and c the velocity of light, the coherent time is
	If the amplitude ratio of two sources producing interference is 3 : 5, the ratio of intensities at maxima and minima is
	Colours of thin films result from