Bragg’s Law -Multiple Choice Questions Quiz

Question 1: What does Bragg's Law describe in the field of physics?

(a) The law of refraction of light
(b) The law of reflection of light
(c) The diffraction of X-rays by crystals
(d) The scattering of particles by a crystal lattice

Question 2: Who proposed Bragg's Law?

(a) William Bragg and John Bardeen
(b) William Bragg and Lawrence Bragg
(c) William Bragg and Marie Curie
(d) William Bragg and Max Planck

Question 3: In Bragg's Law, what does 'n' represent?

(a) The wavelength of X-rays
(b) The order of the diffraction peak
(c) The atomic number of the crystal
(d) The number of atoms in the crystal

Question 4: According to Bragg's Law, what happens when X-rays are incident on a crystal lattice at an angle that satisfies the condition 'nλ = 2d sinθ'?

(a) X-rays are absorbed by the crystal
(b) X-rays are refracted within the crystal
(c) X-rays are diffracted by the crystal lattice
(d) X-rays are scattered in random directions

Question 5: What is 'd' in Bragg's Law?

(a) The angle of incidence of X-rays
(b) The distance between two crystal planes
(c) The wavelength of X-rays
(d) The refractive index of the crystal

Question 6: What does 'θ' represent in Bragg's Law?

(a) The angle of incidence of X-rays
(b) The angle of reflection of X-rays
(c) The angle of diffraction of X-rays
(d) The angle of refraction of X-rays

Question 7: How does increasing the value of 'n' affect the diffraction pattern in Bragg's Law?

(a) It increases the diffraction angle
(b) It decreases the diffraction angle
(c) It increases the wavelength of X-rays
(d) It decreases the wavelength of X-rays

Question 8: What is the significance of Bragg's Law in X-ray crystallography?

(a) It determines the composition of the crystal
(b) It measures the temperature of the crystal
(c) It reveals the arrangement of atoms in the crystal lattice
(d) It calculates the refractive index of the crystal

Question 9: Which type of materials are commonly studied using Bragg's Law in X-ray crystallography?

(a) Liquids and gases
(b) Amorphous solids
(c) Single crystals
(d) Polycrystalline materials

Question 10: What is the main limitation of Bragg's Law in X-ray crystallography?

(a) It requires a large amount of X-ray radiation
(b) It only works for cubic crystal lattices
(c) It cannot determine the chemical composition of the crystal
(d) It is ineffective for materials with low atomic number

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Answer key:

Question 1: c

Question 2: b

Question 3: b

Question 4: c

Question 5: b

Question 6: c

Question 7: b

Question 8: c

Question 9: c

Question 10: b