Mechanics, Properties Of Matter & Sound B.Sc Previous Question Papers : alagappauniversity.ac.in

Name of the University : Alagappa University
Degree : B.Sc
Department : Physics
Subject Code/Name : Mechanics, Properties Of Matter And Sound
Semester : I
Document Type : Model Question Paper /Previous Exams Question Papers
Website : alagappauniversity.ac.in

Download Model/Sample Question Paper : APRIL 2011 : https://www.pdfquestion.in/uploads/alagappauniversity.ac.in/3961.-B.Sc.Physics.pdf

Alagappa University Properties Of Matter Previous Question Paper

Time : 3 Hours
Maximum : 100 Marks

Related : Alagappa University Mathematical Physics-I M.Sc Model Question Papers : www.pdfquestion.in/4023.html

April 2012

Part A :
1. State the difference between Elastic and Inelastic collisions.
2. Give the principle behind a rocket. What is a multistage rocket?
3. Define Torque and Angular momentum. Discuss the relation between them.
4. What are centrepetal and centrifugal forces? Give two examples each.
5. What are the three modulii of elasticity? Write their expressions.
6. What is bending moment? Explain.
7. List any four properties of ultrasonics.
8. What are Lissajous Figures.

Part B

Answer all the questions.
9. (a) Discuss oblique impact between two bodies. Derive an expression for the loss in Kinetic energy. (Or)
(b) Derive expressions for the thrust and velocity of a rocket.
10. (a) State parallel axes theorem. Derive an expression for the moment of inertia of a circular disc about all axes. (Or)
(b) Derive expressions for the final velocity and acceleration of a body rolling down an inclined plane.
11. (a) State and prove Bernoulli’s theorem. (Or)
(b) Derive the relation between the elastic moduli and Poisson’s ratio.
12. (a) Explain in detail the Acoustics of a building. (Or)
(b) Discuss the composition of two SHM at right angles to each other.

Part C

Answer any two of the following
13. Find the centre of mass of three particles of masses m1 = 2kg and m2 = 3kg and m3 = 4kg which are located at the corners of an equilateral triangle.
14. A sphere, a disc and a cyclinder of same radius are allowed to roll down an inclined plane simultaneously from the same height without slipping. Give the order in which they reach the bottom of the phane.
15. Calculate the mass of water flowing in 10 sec through a horizontal capillary tube of circular cross-section of radius 10–3m. The tube is filled at the bottom of a constant level tank at a depth of 1m. Length of the tube is 0.3142m.
16. A string of length 2m and 10 × 10–4kg fixed at both ends is under a tension of 20N. If it vibrates in two segments, determine the frequency of vibration of the string.

April 2011

B.Sc. Degree Examination,  :
Electricity :
(Non-CBCS—2004 onwards)
Time : 3 Hours
Maximum : 100 Marks
Part A (5 × 4 = 20)
Answer any five of the following
1. Define electric field intensity and potential
2. Derive the relation between field and potential.
3. Derive an expression for the effective capacitance of three capacitors connected in series.
4. Define capacitance and give its unit.
5. Explain current density. Give its expression.
6. Define resistivity. Give its expression and unit.
7. Give faraday’s laws of electrolysis.
8. What is seebeck effect? Explain.

Part B : (4 × 14 = 56)
Answer all the questions.
9. (a) State colomb’s theorem. Derive expression for the stress on the surface of a charged conductor. (Or)
(b) State and prove gauss theorem is electrostatics. Hence determine the magnitude of the electric intensity at a point a distance ‘r’ from the axis of a uniformly charged cylinder.

10. (a) Derive expressions for the effective capacitance of capacitors connected in series and parallel. (Or)
(b) Derive expression for the capacitance of a parallel plate capacitor.
11. (a) Explain wheatstone’s bridge and sensitiveness of it. (Or)
(b) Explain the calibration of voltmeter using potentiometer.
12. (a) What is a reversible cell? Derive Gibbs-Helmholtz equation for such a cell. (Or)
(b) Explain the lead acid accumulator.

Part C : (2 × 12 = 24)
Answer any two of the following
13. Three capacitors each of capacitance 9pF are connected is series (i) What is the total capacitance of the combination? (ii) What is the potential difference across each capacitor, if the combination is connected to a 120v supply.