Phy Dec 2002 102 D

Maximum Marks: 100

6

(b) Explain the three electric vectors.

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voltage. coefficient and ang1ean9 a{sp d.i~~~,;i!,s<,'2i'i ...

3. (a) Explain Hall effect and find the expressions of Hall

14

the velocity of propagation.

equations in free space and find

2. (a) What is equation of continuity ? Derive electromagnetic wave

800 Q are joined in series. Is the circuit oscillatory ? 4

(b) A capacitor of 1 I-lF, an inductor of 0.2 H and a resistor of

fincl the frequency of oscillations. 16

ofa capacitor through an inductor and a resistor and also

1. (a) Explain the electrical oscillations produced by the discharge

Part-A

Note: Attempt five questions in all, selecting at least tWo from each part. ALL questions carry equal marks..

TIme allowed: 3 hours

Paper-PHY -102-D

PHYSICS-II

December-2002

B. E. I1nd Semester (New Scheme) Examination,

320

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Part~B

"'2 = sin x + sin 2x + sin 3x + ...... .

"'I = 1 + cos x + cos 2x + cos 3x + .....

or not in the interval (-n, n)

(c) Show, whether the following wave functions are orthogonal

position of this electron ? 5

8

5

13

3

4

,\'l(\

,

vectors. 13

...

among the reciprocal lattice vectors and direct lattice

7. (a) What are reciprocal lattices ? Establish the relationships

(c) Discuss'isotope effect in super conductivity.

(b) What do you mean by density of states?

6.(a) Explain point defects in crystal structure.

a, 4 band 3 c. 8

plane? Find the Miller indices of a plane having intercepts - 2

Miller indices? How will you find the Miller indices of a

(b) Sketch (001), (011), (111) and (OaT) planes. 4 (c) What are

dimensions.

5. (a) Give an account of Bravai s lattices in three

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10

With what fundamental accuracy can we locate the

(b) An electron has a speed of 300 m/s accurate to 0.01 %.

of a wave function.

4. (a) What are matter waves? Give the physIcal significance

(2 )

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(c) Fermi-Dirac distribution function.

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7

7

(b) Meissner effect

(a) Debye T3law

8. Write notes on the following:

.• , .•. , .................................,."" .. "'ce.","," 'hC"'~ ..",'bi·"l'l""k. '.~'

, .:c;\:g:{. .. (b) Show that Ewald construction leads to Bragg's li\\1: .':~ J(.

"V""·h'.

(3)