Andhra University 2008 B.E PHYSICS - university paper

I Year B.E./B.Tech Degree exams

PHYSICS

(Common to All Branches)
Time : 3 hours Maximum : 75 Marks

ques. one is compulsory

ans any 4 from ques. two to 8

All ques. carry equal marks

11

6. a) What is Piezo electric effect? define how this effect can

be used to produce ultrasonic waves.

b) Mention applications of ultrasonic waves.

7. a) Derive Schrodinger time independent wave formula and

find energy Eigen value and Eigen functions of a particle

moving in 1 dimensional box using Schrodinger wave

equation.

b) State and discuss Heisenbergs uncertainty principle.

8. a) Distinguish ranging from metals, semiconductors and insulators

based on band theory of solids.

b) describe Super conductivity, Meisner effect and write

applications of Super conductors.

12

1. Write brief answers to the subsequent 5x3=15 Marks

a) Distinguish ranging from orbit and orbital.

b) What do you understand by super conductivity?

c) Briefly discuss the Effective Atomic Numer rule.

d) What do you understand by elctronegativity?

e) Differentiate ranging from determinate and indeterminate fault

2. a) explain the supeority of Quantum mechanical model of

hydrogen atom over Bohr model of the atom.

8 Marks.

b) Classify the elements into various types/groups explain their

general characteristics. seven Marks

3. a) Bring out the correlation ranging from electronic configuration

and the colour exhibited by an element in a flame test.

8 Marks

b) Mention the salient features of VSEPR theory, based on it

discuss the shapes of (i) XeF4, (ii) SF6 and (iii) CIF3

7 Marks

4. a) provide an account on Fajans Rules with typical examples
8 Marks

Earning:   Approval pending.