Master of Science (Nanotechnology) Examination: Oct Nov 2016
Semester I (New CBCS)
SLR No. Day
Date Time Subject Name Paper No. Seat No.
SLR ST-
745
Wednesday
16/11/2016
10.30 AM
to
01.00 PM
Fundamentals of None
Technology in Physics
C
HCT-1.1
es Instructions: Part- I is compulsory.
Attempt any Four question from Part-II.
Figures to right indicate full marks.
Answer to the Part- I and Part- II are to be written in same answer
book.
Total Marks: 70
Part- I
Q.1 Rewrite the following sentences by selecting correct answers from given
alternative.
07
X-rays are electromagnetic waves with wavelength ranging between

0.02 A 100 A 0.01 A and 98 A
0.05 A and 90 A 2A and 20A
The question represents the mass action law for
semiconductors
np n2
i np ni
n/p ni np 2ni
Nano scale semiconductor materials tightly confine
Neutrons Electrons
Electric field Protons
Ionic solids possess net dipole moment even in the absence of
Internal electric field External electric
Positive electric field Negative electric field
Orientation polarization is given by the expression
α0 2KT α0 3KT
α0 4KT α0 1KT
As surface area changes the of nanoparticles changes.
Properties Application
Electronic Atomic level
Quantum dots are nanomaterials.
Zero dimensional One dimensional
Two dimensional Three dimensional
Define the following terms: 07
Diffraction of x-rays
Semiconductor
Laser
Optical absorption
Internal fields
Optical memory
Nano structured
Part-II
Q.2 What are the two types of semiconductors? How are they distinguishes?. 14
Q.3 What are Miller indices? How do we calculate them? 14
Q.4 Explain construction of Quantum Cascade laser. 14
Q.5 With a neat diagram explain internal or local fields in solid and liquids. 14
Q.6 Answer any TWO of the following: 14
What are applications of electro luminescence?
Magnetic materials.
What is Lorentz force? Explain.
Q.7 Write short notes on any TWO of the following: 14
Optical properties of nanomaterials.
Magnetic materials
Thermal properties of nanomaterial.