University: Sathyabama University
SATHYABAMA UNIVERSITY
Course: B.E, B.Tech Degree Examination
Departments: Aeronautical Engineering, Automobile Engineering, Chemical Engineering, Civil Engineering, Computer Science Engineering, Electronics and Communication Engineering, Information Technology, Mechanical Engineering, M and P, E and C.
Subject: Applied Physics
|
Register
Number
|
|
|
|
|
|
|
|
(Established
under section 3 of UGC Act,1956)
Course & Branch :B.E/B.Tech -
AERO/AUTO/CHEM/CIVIL/CSE/
E&C/ECE/IT/M&P/MECH
Title of the Paper :Applied Physics
Max. Marks:80
Sub. Code :6C0003(2009)
Time
: 3 Hours
Date :03/12/2014
\Session
:AN
_______________________________________________________________________________________________
PART – A (10 x 2 =
20)
Answer All the Questions
1. Define specific heat capacity and name a substance each for
having (i) maximum specific heat capacity (ii) minimum specific heat capacity.
2. State the reason for naming the experimental part in Forbe’s
method as static part and dynamic part.
3. In telescope objectives correction for coma is more important
than astigmatism. Why?
4. What do
you mean by lens aberrations?
5. Define sound intensity, sound power and sound pressure. Mention
their units.
6. What is meant by Reverberation, reverberation time and standard reverberation
time?
7. What is
neutral axis and neutral surface of a beam?
8. A cantilever of length 1.5 m is clamped horizontally at one
end. A weight of 0.2 kg is attached at
free end. The radius of the rod is 0.01m
and the Young’s modulus is 1010 Nm-2.. Find the
depression of a cantilever at the free end.
9. Write down Schrödinger time dependent and time independent
equation.
10. What do you infer from G. P. Thomson’s experiment?
PART – B (5
x 12 = 60)
Answer All the Questions
11. Define thermal conductivity. Describe with relevant theory an
experiment to determine the thermal conductivity of a good conductor by Forbe’s
method. Discuss its merits and demerits.
(or)
12. Describe the relevant theory and experiment used to determine the
thermal conductivity of a bad conductor by Lee’s method.
13. (a) Explain the defects astigmatism and coma.
(b) Explain the methods to minimize them.
(or)
14. (a) What do you mean by achromatism?
(b) Discuss the condition for achromatism of two lenses
separated by a distance.
(c) Convex lens of focal length 0.2m, made up of crown glass
of dispersive power 0.01 and another convex lens of focal length 0.3m made of
flint glass of dispersive power 0.02 are to be arranged for achromatism placed
separately. Find the distance‘d’ of separation between the lenses are of same
material.
15. Define sound absorption, absorption coefficient, average sound
absorption coefficient .Discuss its mechanism and methods to determine the
coefficient of sound absorption.
(or)
16. Define reverberation and reverberation time. Derive the Sabine’s
formula for reverberation time by stating the assumptions and limitations.
17. (a) Derive an expression for the depression and Young’s modulus of
the beam supported at its ends and loaded in the middle (Non-uniform bending).
(b) A bar of length 2m with breadth of 4.2 x 10-2
m and with a thickness of 3 x 10-3m is supported at its two ends and
loaded in the middle. The depression
observed in the middle is 2.23 x 10-3 m when a load of 0.15kg is placed. Calculate Young’s modulus of the material of
the bar.
(or)
18. (a) Define
bending moment of beam
(b) Derive an expression for the bending
moment of the beam with assumptions.
19. Explain wave and particle aspect of radiation and matter. Hence
derive deBroglie’s wave equation.
(or)
20. With a neat diagram explain G.P.Thomson experiment to prove the
existence of matter waves.
0 comments:
Pen down your valuable important comments below