Bragg's Equation

Q.

Calculate the distance between the planes of ions if the smallest angle of reflection is x-ray diffraction is ${5.97}^0$ and the wavelength of incident ray is 58.6 pm? $(sin{5.97}^0$ = 0.104)

1. 282 pm

2. 382 pm

3. 156 pm

4. 78 pm

Q.

In the Bragg's equation for diffraction of X-rays, n represents for

[MP PMT 2000]

1. Quantum number

2. An integer

3. Avogadro's numbers

4. Moles

Q.

The second order Bragg diffraction of X-rays with l =1.0 A⁰ froma set of parallel planes in a metal occurs at an angle of 60⁰.The distance between the scattering planes in the crystal is

1. 0.575 A⁰

2. 1.00 A⁰

3. 2.00 A⁰

4. 1.15 A⁰

Q.

First order X-ray reflection ($\lambda$ = 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

1. 360 pm

2. 420 pm

3. 560 pm

4. 180 pm

Q.

In Bragg’s equation n λ = 2 d sinθ, ‘n’ represents

1. the number of moles

2. the principal quantum number

3. the Avogadro’s number

4. the order of reflection

Q.

What is the wavelength of x-ray, if the interplanar distance of the crystal is 286 pm and the incident angle is ${15.8}^o$. Order of reflection is 2.

1. 378 pm

2. 154.2 pm

3. 294.3 pm

4. 77.8 pm

Q. The second order Bragg's diffraction of rays with $\lambda$ = 1A from a set of parallel planes in a metal occurs at an angle of ${60}^{\circ }$ The distance between the scattering planes in the crystal is

1. 0.575 $\stackrel{\circ }{A}$
2. 1.00 $\stackrel{\circ }{A}$
3. 2.00 $\stackrel{\circ }{A}$
4. 1.15 $\stackrel{\circ }{A}$

Q. what is formula to calculate angular momemtum quantum number?