B 03GAPHT121122401 Pages: 2
Reg No.:_______________ Name:__________________________
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
B.Tech Degree S1 (Challenge Course) Examination December 2024
Course Code: GAPHT121
Course Name: PHYSICS FOR INFORMATION SCIENCE
Max. Marks: 60 Duration: 2 hours 30 minutes
PART A
(Answer all questions. Each question carries 3 marks) CO Marks
1 Define Fermi level ? Show the graphical representation of Fermi energy CO1 (3)
with fermi function at T=0 and T>0
2 Define critical temperature and critical magnetic field? Give their CO1 (3)
relation.
3 List three properties of a well behaved wave function and give its CO2 (3)
physical significance.
4 An electron has a speed of 1.05x104 m/s with an accuracy of 0.02%. CO2 (3)
Calculate the uncertainty in the position of electron?
5 Differentiate intrinsic and extrinsic semiconductors. CO3 (3)
6 Explain the current flow across a p-n junction when it is forward biased. CO3 (3)
7 Distinguish between p-n junction diode and Zener diode. CO4 (3)
8 What is the working principle of an LED? Give any two applications of CO4 (3)
LED .
PART B
(Answer any one full question from each module, each question carries 9 marks)
Module -1
9 a) Explain how the band theory of solids leads to the classification of solids CO1 (6)
in to conductors, semiconductors and insulators.
b) Calculate the density of donor atoms to produce an n-type material with CO1 (3)
0.2 -m resistivity and 0.35m2V-1 electron mobility?
10 a) Describe Meissner effect in superconductors. CO1 (6)
Distinguish between Type-1 and Type-11 superconductors.
b) Write any three applications of superconductors? CO1 (3)
Page 1 of 2
Reg No.:_______________ Name:__________________________
APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY
B.Tech Degree S1 (Challenge Course) Examination December 2024
Course Code: GAPHT121
Course Name: PHYSICS FOR INFORMATION SCIENCE
Max. Marks: 60 Duration: 2 hours 30 minutes
PART A
(Answer all questions. Each question carries 3 marks) CO Marks
1 Define Fermi level ? Show the graphical representation of Fermi energy CO1 (3)
with fermi function at T=0 and T>0
2 Define critical temperature and critical magnetic field? Give their CO1 (3)
relation.
3 List three properties of a well behaved wave function and give its CO2 (3)
physical significance.
4 An electron has a speed of 1.05x104 m/s with an accuracy of 0.02%. CO2 (3)
Calculate the uncertainty in the position of electron?
5 Differentiate intrinsic and extrinsic semiconductors. CO3 (3)
6 Explain the current flow across a p-n junction when it is forward biased. CO3 (3)
7 Distinguish between p-n junction diode and Zener diode. CO4 (3)
8 What is the working principle of an LED? Give any two applications of CO4 (3)
LED .
PART B
(Answer any one full question from each module, each question carries 9 marks)
Module -1
9 a) Explain how the band theory of solids leads to the classification of solids CO1 (6)
in to conductors, semiconductors and insulators.
b) Calculate the density of donor atoms to produce an n-type material with CO1 (3)
0.2 -m resistivity and 0.35m2V-1 electron mobility?
10 a) Describe Meissner effect in superconductors. CO1 (6)
Distinguish between Type-1 and Type-11 superconductors.
b) Write any three applications of superconductors? CO1 (3)
Page 1 of 2
