Cochin University of Science and Techology (CUST) 2008 B.Tech Civil Engineering Engineering Physics - Question Paper

B. Tech.

Degree I & II Semester (Combined) Examination,

June 2008

IT/CS/EC/CE/ME/SE/EB/EI/ EE/FT 102 ENGINEERING PHYSICS

(2006 Scheme)

Time:

3 Hours

: 100

PART A

(Answer all questions)

\

(8x5 =

= 40)

I

a)y

How will you test the optical planeness of a glass plate?

b),

Calculate the thickness of a retardation plate, that can convert a PPL into CPL.

Given X - 589nm fJ._e -1.55, jli₀ -1.54

c)

Briefly explain the principle of holography.

d)/

List any five applications of ultrasonic waves.

e)7

Using Heisenbergs uncertainty principle, prove that no electron is residing inside the nucleus.

f)v

What are thermonuclear reactions?

g)'

Explain the terms : Lattice Planes and Miller Indices.

*0*

What is meant by double refraction?

PART B

(15x4 =

= 60)

IIJ

a)

Discuss the theory of interference in thin films.

(10)

b)

Give differences between Interference and Diffraction.

(5)

OR

III

a)

Explain the construction and working of a Nicol Prism.

(10)

b)

What are half shades? Briefly explain the working of Lorantz half shade.

(5)

IV j

a)

Explain the terms : i) Optical Pumping ii) Stimulated emission.

(5)

V

b)

Outline the principle and working of the He-Ne Laser.

(10)

OR

V

a)

Derive the expression for Numerical Aperture of an optical fibre.

(7)

b)

Explain the working of an optical fibre communication system.

(8)

VIJ

a)

What is a wave function? Give its physical significance.

(5)

b)

Derive time independent Schrodinger equation.

(10)

OR

VII

a)

Explain the working of a Nuclear reactor.

(10)

b)

State Paulis exclusion principle.

(5)

VIII

a)

State and explain Braggs law.

(5)

b)

Give the classification of semiconductors with their applications.

(10)

OR

IX

a)

What is Meissner effect?

(5)

b)

Distinguish between type I and type II superconductors with examples.

(10)