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# young's slit experiment and diffraction question watch

1. can someone pls ans these questions for me pls i dont understand how to get the correct ans.

especially (a) (ii), (iii) and (b) (i)

thanks

2. (Original post by Exotic-L)
x
i can't do b part 1 since i'm too inept ;( although i should know how to do it....

a part 2 though

so if you increase s for example would get smaller and the fringe spacing would get smaller? so the pattern on the graph would have a lower frequency? so slit width is bigger than wavelength of light? i'm really not sure but it's somewhere to start i guess

then you got part 3

so increase s decrease w right?
3. (Original post by thefatone)
i can't do b part 1 since i'm too inept ;( although i should know how to do it....

a part 2 though

so if you increase s for example would get smaller and the fringe spacing would get smaller? so the pattern on the graph would have a lower frequency? so slit width is bigger than wavelength of light? i'm really not sure but it's somewhere to start i guess

then you got part 3

so increase s decrease w right?
Thanks for the reply but what does w and s stand for cause I don't learn the formula using those letters
4. (Original post by Exotic-L)
Thanks for the reply but what does w and s stand for cause I don't learn the formula using those letters

w = fringe spacing in metres (m)
= wavelength of the light in metres (m)
D = distance between the double slits and the screen in metres (m)
s = slit separation in metres (m)

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