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Cool goIITian

Joined:	23 Dec 2006
Post:	76

11 Apr 2008 15:02:39 IST

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541

pls explain this question...

None

In an X-ray set up accelerating potential difference is set at V volt and first a target metal having atomic no. Z₁ is used then target metal having Z₂ is used (

is wavelength of KX-ray from

target and

is wavelength of K, X-ray with Z₂ target)

then

The difference

and

will be same for both the target metals.

then

Solution:

For Ka transition
depends on

(2)

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Comments (6)

Sonal

Cool goIITian

Joined: 23 Dec 2006

Posts: 76

11 Apr 2008 15:16:51 IST

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Is nobody there to solve this ?

Sonal

Cool goIITian

Joined: 23 Dec 2006

Posts: 76

11 Apr 2008 16:49:22 IST

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No body......!

array if any one knows it pls respond.....!

ashish banga

Blazing goIITian

Joined: 16 Dec 2006

Posts: 1362

11 Apr 2008 16:53:50 IST

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wavelength minimum is independent of the material used. it depends
on the accelerating potential. it is constant here

varsha valli g.

Blazing goIITian

Joined: 31 Jan 2007

Posts: 515

11 Apr 2008 17:07:12 IST

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its simple ,just apply this formula:

root(c/wavelength)=a(Z-b)

for K shell b=1

now Z is inversely proportional to wavelength.so if

Z1<Z2=>lambda1-lamda(min)>lambda2-lambda(min)

so b) is right.

rate if satisfied

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Krishna Gopal Singh

Forum Expert

Joined: 29 Dec 2006

Posts: 5153

12 Apr 2008 01:35:52 IST

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Perfect answer Varsha. Well done

rishabhmehan

New kid on the Block

Joined: 12 Apr 2008

Posts: 4

12 Apr 2008 22:31:53 IST

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well i have a better method that needs no soln at all

in first two options the 2nd part is same so we conclude the ans should be either 1 or 2 then we consider 4 ans whose first part is quite similar to the 2nd ans therfore here u go ans is 2

plz rate me !!!!!!!!!!

i think i have given the best method to these kind of problems....it is known as jugar :)

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