GATE Physics: Questions 9 - 11 of 290

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 290 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 200.00 or

Question number: 9

» Atomic and Molecular Physics » X-Ray Spectra

Appeared in Year: 2014

MCQ▾

Question

The energy, εk for band electrons as a function of the wave vector, k in the first Brillouin zone (πakπa) of a one dimensional monatomic lattice is shown as ( a is lattice constant)

The energy as a function of the wave vector

The Energy as a Function of the Wave Vector

In figure the energy for band electrons as a function of the wave vector in the first Brillouin zone of a one dimensional monatomic lattice is shown as.

The variation of the group velocity vk is most appropriately represented by

Choices

Choice (4) Response

a.

The variation of the group velocity - Choice – A

The Variation of the Group Velocity - Choice – A

In figure the variation of the group velocity with respect to wavevector is shown.

b.

The variation of the group velocity - Choice – B

The Variation of the Group Velocity - Choice – B

In figure the variation of the group velocity with respect to wavevector is shown.

c.

The variation of the group velocity - Choice – C

The Variation of the Group Velocity - Choice – C

In figure the variation of the group velocity with respect to wavevector is shown

d.

The variation of the group velocity - Choice – D

The Variation of the Group Velocity - Choice – D

In figure the variation of the group velocity with respect to wavevector is shown

Question number: 10

» Mathematical Physics » Elements of Complex Analysis » Residue Theorem and Applications

Appeared in Year: 2015

Short Answer Question▾

Write in Short

The value of 03t2δ(3t6)dt is ________ (up to one decimal place)

Question number: 11

» Electromagnetic Theory » Diffraction and Polarization

Appeared in Year: 2015

Short Answer Question▾

Write in Short

A beam of X – ray of intensity I0 is incident normally on a metal sheet of thickness 2 mm. The intensity of the transmitted beam is 0.025I0 . The linear absorption coefficient of the metal sheet (in per m) is ________ (up to one decimal place).

Sign In