[Free] IIT JAM Physics Test Series 2023 : Solid State Physics – (Crystal Diffraction)

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Now In this Post of IIT JAM Physics Test Series, you will get a test of the topic Crystal Structure of Chapter Solid State Physics. There are total 15 Questions given below also Answers are attached at the end of the test so that you can verify your answers after completing the test. So, Practice these Questions and Do your Best. Also Solve IIT JAM Physics Previous Year Question Paper. And Don’t Forget to Share with Your Friends.

[Free] IIT JAM Physics Test Series 2023 : Solid State Physics – (Crystal Diffraction)

Q1. In the X-ray diffraction pattern of a sodium metal, which has a BCC structure, the missing reflection planes will be

  • (A) 101 
  • (B) 011 
  • (C) 020 
  • (D) 100

Q2. A metal with body centered cubic (bcc) structure shows the first (i.e, smallest angle) diffraction peak at a Bragg angle of θ = 30°. The wavelength of X-ray used is 2.1 Å. The volume of the unit cell of the metal is

  • (A) 9.3 (Å)3 
  • (B) 26.2 (Å)3 
  • (C) 13.1 (Å)3 
  • (D) 4.6 (Å)3

Q3. Consider X-ray diffraction from a crystal with a face centered cubic (fcc) lattice. The lattice plane for which there is no diffraction peak is

  • (A) (2, 1, 2) 
  • (B) (2, 0, 0) 
  • (C) (1, 1, 1) 
  • (D) (3, 1, 1)

Q4. For a NaCl crystal, the cell-edge a = 0.563 nm. The smallest angle at which Bragg reflection can occur corresponds to a set of planes whose indices are

  • (A) (100) 
  • (B) (110) 
  • (C) (111) 
  • (D) (200)

Q5. The distance between the adjacent atomic planes in CaCO3, is 0.3 nm. The smallest Bragg scattering for 0.03 nm X-ray is

  • (A) 2.9° 
  • (B) 1.5° 
  • (C) 0.29° 
  • (D) 5.8°

Q6. An X-ray tube operated at 30 kV emits a continuous X-ray spectrum. The short wavelength limit λ (given that e = 1.6 × 10-19 coulomb, c = 3 ×108 m/sec and h = 6.624 ×10-34 J-sec) is given by

  • (A) 0.1656 nm 
  • (B) 0.0414 nm 
  • (C) 0.0207 nm 
  • (D) 0.2040 nm

Q7. The wavelength associated with an electron accelerated through a potential difference 100 V is

  • (A) 1.2 Å 
  • (B) 12.2 Å 
  • (C) 12 nm 
  • (D) 1.22 pm

Q8. X-rays can be deflected by

  • (A) magnetic field
  • (B) only electric field
  • (C) only simultaneously applying electric and magnetic field 
  • (D) neither by electric nor magnetic field

Q9. The number of ions in the unit cell of NaCl crystal is

  • (A) 1 
  • (B) 4 
  • (C) 8
  • (D) 2

Q10. The angle of diffracted X-rays is 90° from the incident direction of X-rays. The interplanar separation of the planes responsible for the diffraction is given by

  • (A)  λ/√2 
  • (B) λ/2 
  • (C) λ√2 
  • (D) (λ√3)/2

Q11. Characteristic X-rays are the characteristic of which of the following :

  • (A) Cathode materials 
  • (B) Accelerating voltage 
  • (C) Anode materials 
  • (D) Tube current

Q12. X-ray diffraction can be applied to

  • (A) liquids only all liquids,
  • (B) solids and crystalline materials 
  • (C) gaseous or vapour materials only 
  • (D) solid, crystalline materials only

Q13. The amplitude of scattering of X-rays scattered by a single atom is generally denoted as

  • (A) Polarization factor 
  • (B) Form factor 
  • (C) Structure factor 
  • (D) Fractional coordination

Q14. During X-ray emission if the voltage is increased:

  • (A) minimum wavelength decreases 
  • (B) intensity increases 
  • (C) minimum wavelength increases 
  • (D) intensity decreases

Q15. In the X-ray diffraction of a set of crystal planes having d equal to 0.18 nm, first order reflection is found to be at an angle of 22° . The wavelength of X-ray is: (sin 22° = 0.208) :

  • (A) 0.0749 nm 
  • (B) 0.0374 nm 
  • (C) 0.749 nm 
  • (D) 0.374 nm

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