Any buddy, please provide me the IIT JAM Previous Year Question Paper Physics (PH)…………..

As per your request here I am sharing the IIT JAM Previous Year Question Paper Physics (PH):

An X-ray diffraction (XRD) experiment is carried out on a crystalline solid having FCC
structure at room temperature. The solid undergoes a phase transformation on cooling to
−20 oC and shows orthorhombic structure with small decrease in its unit cell lengths as
compared to the FCC unit cell lengths. As a result, the (311) line of the XRD pattern
corresponding to the FCC system
(A) will split into a doublet.
(B) will split into a triplet.
(C) will remain unchanged.
Q.13
(D) will split into two separate doublets.

a) A solid having a simple cubic structure at room temperature with lattice parameter
a and one valence electron per atom, is assumed to show free electron behaviour.
Calculate the magnitude of the Fermi wave vector and the corresponding equivalent
temperature. (12)

(b) Find the ratio of the magnitude of the Fermi wave vector to the radius of the largest
sphere that can be inscribed within the first Brillouin zone of the solid.







For complete question paper clcik on the attachment given below:

Attached Files

IIT JAM Previous Year Question Paper Physics (PH).PDF (102.8 KB, 78 views)