IGCSE/GCSE/O & A Level/IB/University Student Forum

Qualification => Subject Doubts => IGCSE/ GCSE => Sciences => Topic started by: Ghost Of Highbury on May 20, 2009, 10:01:50 am

Title: Physics help
Post by: Ghost Of Highbury on May 20, 2009, 10:01:50 am

Hello
everyone
cud someone plz help me in Paper 3 May/June 2008 First variant paper..Q7.a) and b.)
i have attached the paper

Title: Re: Physics help
Post by: Ghost Of Highbury on May 20, 2009, 10:04:58 am

plz explain how do u draw the wave using the wavefronts.???????

Title: Re: Physics help
Post by: Ghost Of Highbury on May 20, 2009, 10:17:11 am

astarmathandphysics....plz help...anyone??

Title: Re: Physics help
Post by: astarmathsandphysics on May 20, 2009, 10:17:26 am

Someone help. I wont be home for hours

Title: Re: Physics help
Post by: Ghost Of Highbury on May 20, 2009, 10:23:06 am

k..anyone else?? :(

Title: Re: Physics help
Post by: AS girl on May 20, 2009, 10:31:36 am

Properties of the wave after getting reflected:
1) Has same speed
2)Same frequency
3)Same wavelength

Only the direction changes


Properties of the wave after getting refracted
1) Speed decrease
2)Direction changes
3)Wavelength becomes shorter

So the distance of the wavefront becomes shorter...closer to each other but u have to make sure that the distance between each wave front is the same!! I attached a pic but it's not that accurate..i just want u to understand the idea

Hope u understood

Title: Re: Physics help
Post by: Ghost Of Highbury on May 20, 2009, 11:07:38 am

hey got it..
thanks a lot IG girl

Title: Re: Physics help
Post by: AS girl on May 20, 2009, 11:21:45 am

Quote from: eddie_adi619 on May 20, 2009, 11:07:38 am

hey got it..
thanks a lot IG girl

No problem..anytime ;)