# Download JNTUA B.Tech 1-1 R15 2019 Dec Supply 15A56103 Basic Physics Question Paper

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Code: 15A56103

B.Tech I Year I Semester (R15) Supplementary Examinations November/December 2019
BASIC PHYSICS
(Food Technology)

Time: 3 hours Max. Marks: 70

PART ? A
(Compulsory Question)

*****
1 Answer the following: (10 X 02 = 20 Marks)
(a) What is polarization?
(b) Define gradient of a scalar field.
(c) What are electromagnetic waves?
(d) Define a non-inertial reference frame.
(e) What is Heisenberg uncertainty principle?
(f) What is population inversion?
(g) What is forbidden energy gap?
(h) Define Bravais Lattices.
(i) What is Fermi-energy?

PART ? B
(Answer all five units, 5 X 10 = 50 Marks)

UNIT ? I

2 Write the differential equation for the damped oscillation of a particle and solve it. Also discuss
various cases.
OR
3 State and explain Gauss divergence theorem.

UNIT ? II

4 Derive Maxwell?s equations and give their physical interpretation.
OR
5 What are Galilean transformations? Derive Galilean transformation equation for two inertial frames.

UNIT ? III

6 (a) What are the failures of classical physics?
(b) Derive an expression for the wavelength of matter waves.
OR
7 How to construct and reconstruct a hologram?

UNIT ? IV

8 State and explain Bragg?s law. Mention its applications.
OR
9 Differentiate conductors, semiconductors and insulators.

UNIT ? V

10 Discuss various models to explain the properties of nucleus.
OR
11 (a) What are the similarities and dissimilarities between nuclear fission and fusion?
(b) Write a note on elementary particles.

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R15
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