Q8 of 79 Page 379

Can we conclude from the interference phenomenon whether light is a transverse wave or a longitudinal wave?

Interference experiment only proves that light has a wave nature in addition to particle nature. It does not tell us the kind of displacement the wave has as interference is shown by both longitudinal and transverse waves.


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6

Can we perform Young’s double slit experiment with sound waves? To get a reasonable “fringe pattern”, what should be the order of separation between the slits? How can the bright fringes and the dark fringes be detected in this case?

 7

Is it necessary to have two waves of equal intensity to study interference pattern? Will there be an effect on clarity if the waves have unequal intensity?

 9

Why don’t we have interference when two candles are placed close to each other and the intensity is seen at a distant screen? What happens if the candles are replaced by laser sources?

 10

If the separation between the slits in a Young’s double slit experiment is increased, what happens to the fringe-width? If the separation is increased too much, will the fringe pattern remain detectable?