When another X-rays source was used- a reflection was observed at 15-26- The wavelength of the X-rays was in pm-

First case : λ = 229pm Q = 23 ^ 0 20' Interplanar spacing d = λ #160; 2sinQ d = 229 210.396 d = 289.14p ...

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Physics

Electric Field Due to a Sphere and Thin Shell

When another ...

Question

When another X-rays source was used, a reflection was observed at $15^{\circ} 26^{'}$ . The wavelength of the X-rays was (in pm)?

Open in App

Solution

$F i r s t c a s e : λ = 229 p m Q = 23^{0} 20^{'} I n t e r p l a n a r s p a c i n g d = \frac{λ}{2 s i n Q} d = \frac{229}{210.396} d = 289.14 p m S e c o n d c a s e : d = 289.14 p m Q = 15^{0} 26^{'} λ = ? λ = 2 d s i n Q = 2 \times (289.14) (s i n (15^{0} 26^{'})) = 2 \times 1289.14 (0.266) λ = 153.82 p m$

Suggest Corrections

Similar questions

Q. In a Coolidge tube experiment, the cutoff wavelength for the observed x ray was found to be 25 pm. This means x rays with wavelengths greater than this won't be present; only x rays whose wavelength is less than 25 pm will be received.

Q. First order X - ray reflection

(λ = 154

)

which is maximum from a set of

(2, 0, 0)

planes of a bcc lattice was observed at

16^{o} 6^{'}

. The edge length (in pm) of unit cell is:

(sin 16^{o} 6^{'} = 0.2773)

First order X-ray reflection ( $λ$ = 154 pm) is maximum from a set of (2, 0, 0) planes of a B.C.C lattice was observed at $16^{\circ}$ , 6’. Then, the edge length of unit cell is

Q. The short-wavelength limit shifts by

26 pm

when the operating voltage in an X-ray tube is increased to

1.5

times the original value. What was the original value of the operating voltage?

Join BYJU'S Learning Program

When another X-rays source was used, a reflection was observed at 15∘26′. The wavelength of the X-rays was (in pm)?

Firstcase:λ=229pmQ=23020′Interplanarspacingd=λ2sinQd=229210.396d=289.14pmSecondcase:d=289.14pmQ=15026′λ=?λ=2dsinQ=2×(289.14)(sin(15026′))=2×1289.14(0.266)λ=153.82pm

When another X-rays source was used, a reflection was observed at $15^{\circ} 26^{'}$ . The wavelength of the X-rays was (in pm)?