IIT JAM physics last years question paper

I need the IIT JAM physics last years question paper, will you please provide me the same???

[Kiran Chandar]

As you need the IIT JAM physics last years question paper, here I am sharing the same;

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.

In an experiment, the resistance of a rectangular slab of a semiconductor is measured as a
function of temperature. The semiconductor shows a resistance of 300 Ω at 200 K and 2 Ω at
250 K. Its energy band gap is [Given: ln(15) = 2.708, ln(10)= 2.303]
Q.15
(A) 0.138 eV (B) 0.431 eV (C) 0.690 eV (D) 0.862 eV








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