Turn on thread page Beta
 You are Here: Home >< Physics

# physics question watch

1. hi ppl..cud sum1 plz help me with this question? its about the diffraction of waves (i hate waves...lol) ok heres the question:

a beam of microwaves is directed at two slits in a metal sheet (the pic is attached). P and R are two adjacent positions where a microwave detector would register readings. Use the diagram to determine the wavelenth of the microwaves.

( i was doing 420-442 to get the wavelength but i dont think its that easy..cud sum1 plz explain how to do it???
Attached Images

2. i think it is that easy. constructive interference happens when the coherent waves are 'n' wavelenths apart. As p and r are adjascent, the distances have a difference of one wavelenth, so the wavelength is 22mm... methinks
3. hi thanx for replying tishysquishy! r u sure its that easy? i get so confused will all this wave stuff..lol..but if u say so thanx once again
4. (Original post by nemo199)
hi thanx for replying tishysquishy! r u sure its that easy? i get so confused will all this wave stuff..lol..but if u say so thanx once again
it is that easy - should only be a 1 or max two mark question...how much is it worth?

Turn on thread page Beta

### Related university courses

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:
Updated: July 7, 2005
Today on TSR

### Unofficial Markscheme list 2018

Find all the answers here

### 2,105

students online now

Exam discussions

### Find your exam discussion here

Poll

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

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