You are Here: Home >< Physics

# young's slit experiment and diffraction question

Announcements Posted on
TSR's new app is coming! Sign up here to try it first >> 17-10-2016
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)

## Register

Thanks for posting! You just need to create an account in order to submit the post
1. this can't be left blank
2. this can't be left blank
3. this can't be left blank

6 characters or longer with both numbers and letters is safer

4. this can't be left empty
1. Oops, you need to agree to our Ts&Cs to register

Updated: March 29, 2016
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Today on TSR

### How does exam reform affect you?

From GCSE to A level, it's all changing

### Who would you like to thank?

Poll
Study resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.