Condensed Matter Physics (CSIR (Council of Scientific & Industrial Research) Physical Sciences): Questions 7 - 9 of 19

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 463 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 300.00 or

Question number: 7

» Condensed Matter Physics » Hall Effect and Thermoelectric Power

Appeared in Year: 2012

MCQ▾

Question

A magnetic field sensor based on the Hall effect is to be fabricated by implanting As into a Si film of thickness Equation . The specifications require a magnetic field sensitivity of Equation at an excitation current of Equation . The implantation dose is to be adjusted such that the average carrier density, after activation, is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 8

» Condensed Matter Physics » Bonding of Solids

Appeared in Year: 2012

MCQ▾

Question

The radius of the Fermi sphere of free electrons in a monovalent metal with an Equation structure, in which the volume of the unit cell is Equation is –

(December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 9

» Condensed Matter Physics » Band Theory of Solids » Semiconductors

Appeared in Year: 2012

MCQ▾

Question

In a band structure calculation, the dispersion for electrons is found to be, Equation Where Equation is a constant and Equation is the lattice constant. The effective mass at the boundary of the first Brillouin zone is – (December)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

f Page
Sign In