UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020 - PROFESSIONAL ENGLISH - I - SLOT I
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ALAGAPPA
UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020
FIRST
SEMESTER SLOT – I
PRFESSIONAL ENGLISH - I
Total Marks: 25 Time: 1.0 Hr
SECTION A –MCQ – 10 x 1 = 10 Marks
ANSWER ALL THE QUESTIONS
1. Give the
reason why a class of water has no color, while the sea is blue.
2. How Sir C.V. Raman experimented
to invalidate the sky-reflection theory of sea color?
3. Why February
28 is being celebrated as National Science Day in our country?
4. Why Tipu
Sultan is called the original rocket man of India?
5. Who is a ‘Biographer’? And what
would you call ‘Simply Fly: A Deccan Odyssey’ by Captain G.R.Gopinath, a ‘Biography’
or ‘Autobiography’?
SECTION B - DESCRIPTIVE - 3 x 5 = 15 Marks
ANSWER ANY THREE
6. Briefly
describe the research work of Sir C.V.Raman.
7. Discuss how
the whispering gallery in St. Paul’s Cathedral in England works.
8. List out 10 words from the professional
vocabulary you learned in ‘The Indian Scientist Who Found Why the Sea is Blue?’
and ‘Tipu Sultan – The Original Rocket Man of India’.
9. Distinguish between any three of
the facts and opinions in the passage ‘Tipu Sultan – The Original Rocket Man of
India’.
10. Write note
on ‘Congreve Rocket’ and it’s connection to Mysore wars.
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UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020 - MECHANICS AND RELATIVITY - 7BPH1C2 - SLOT I
ALAGAPPA
UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020
FIRST
SEMESTER SLOT – I
MECHANICS AND RELATIVITY - 7BPH1C2
Total Marks: 25 Time: 1.0 Hr
SECTION A – SHORT ANSWER - 5 x 2 = 10 Marks
ANSWER ALL THE QUESTIONS
1. Define
center of gravity.
2. What is cone
of friction?
3. What is
limiting friction?
4. Define angle
of friction.
5. Define
coefficient of friction.
SECTION B - DESCRIPTIVE - 3 x 5 = 15 Marks
ANSWER ANY THREE
6. Derive an
expression for the center of gravity of a hollow hemisphere.
7. Derive an
expression for the center of gravity of a solid hemisphere.
8. State laws
of friction.
9. Write a note
on friction clutch.
10. Derive an
expression for the center of gravity of a hollow right solid cone.
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020 - SOLID STATE PHYSICS - 7BPHE2C - SLOT II
ALAGAPPA
UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020
FIFTH
SEMESTER SLOT – II
SOLID STATE PHYSICS - 7BPHE2C
Total Marks: 25 Time: 1.0 Hr
SECTION A – SHORT ANSWER - 5 x 2 = 10 Marks
ANSWER ALL THE QUESTIONS
1. Write
note on physical properties of metals.
2. Define
polarization.
3. What is
dielectric breakdown?
4. Define
dielectric constant of an isotropic medium.
5. List types
of semiconductors.
SECTION B - DESCRIPTIVE - 3 x 5 = 15 Marks
ANSWER ANY THREE
6. Distinguish
between electrical and thermal conductivities.
7. Explain ionic
and orientation polarization.
8. Explain
Clausius-Mossotti relation.
9. Distinguish
between intrinsic and extrinsic semiconductors with suitable examples.
10. Describe
any two applications of dielectric materials.
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020 - PROPERTIES OF MATTER AND ACOUSTICS - 7BPH1C1 - SLOT I
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ALAGAPPA
UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020
FIRST
SEMESTER SLOT – I
PROPERTIES OF MATTER AND ACOUSTICS 7BPH1C1
Total Marks: 25 Time: 1.0 Hr
SECTION A – SHORT ANSWER - 5 x 2 = 10 Marks
ANSWER ALL THE QUESTIONS
1. Define
elasticity.
2. State Hooke’s
law.
3. Define
torsion of a body.
4. Define Poisson’s
ratio.
5. Contrast
stress and strain.
SECTION B - DESCRIPTIVE - 3 x 5 = 15 Marks
ANSWER ANY THREE
6. Discuss work
done in deforming a body.
7. Derive the
relation between three elastic moduli.
8. Derive the
expression for torque per unit twist of a cylindrical body.
9. Explain how
the torsion pendulum is used in finding rigidity modulus of a material.
10. Discuss
different moduli of elasticity.
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020 - LASER PHYSICS AND FIBER OPTICS - 7BPHE1C - SLOT II
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ALAGAPPA
UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020
FIFTH
SEMESTER SLOT – II
LASER PHYSICS AND FIBER OPTICS 7BPHE1C
Total Marks: 25 Time: 1.0 Hr
SECTION A – SHORT ANSWER - 5 x 2 = 10 Marks
ANSWER ALL THE QUESTIONS
1. Define
holography.
2. What is
meant by surface hardening?
3. Sketch the
basic form of optical fiber.
4. Define
numerical aperture.
5. State any
three techniques of fiber fabrication.
SECTION B - DESCRIPTIVE - 3 x 5 = 15 Marks
ANSWER ANY THREE
6. Describe the
applications of laser in mechanical industry.
7. Explain the
technique of holography.
8. Discuss the
propagation of light wave through an optical fiber.
9. Explain any
five fiber losses.
10. Discuss the
structure of step index and graded index fibers.
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020 - OPTICS AND SPECTROSCOPY - 7BPH3C1 - SLOT II
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ALAGAPPA
UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - NOVEMBER – 2020
THIRD
SEMESTER SLOT – II
OPTICS AND SPECTROSCOPY - 7BPH3C1
Total Marks: 25 Time: 1.0 Hr
SECTION A – SHORT ANSWER - 5 x 2 = 10 Marks
ANSWER ALL THE QUESTIONS
1. What
is a Poisson spot?
2. Define
Fresnel half period zone.
3. What is a Polaroid?
4. What is a
symmetric top?
5. State any
two applications of vibrational Raman spectra.
SECTION B - DESCRIPTIVE - 3 x 5 = 15 Marks
ANSWER ANY THREE
6. Discuss the
Fresnel theory of rectilinear propagation of light.
7. Bring out
the similarities and differences between a zone plate and a convex lens.
8. Explain the
working of half-wave plate.
9. Write note
on the intensity of spectral lines.
10. Explain the classical theory of Raman Effect.
UNIT BASED ONLINE EXTERNAL EXAMINATION - OCTOBER – 2020 - COMPUTER PROGRAMMING IN C - 7BPH5C2 - SLOT II
Alagappa
University, Karaikudi. (AU06)
Unit -
Based Online External Examination – NOV 2020
B.Sc.
Physics
Fifth
Semester – Slot -II
Computer
Programming in C
Time: 1
Hour Maximum: 25 Marks
Date : 17-11-2020 Sub Code : 7BPH5C2
Answer all
the questions
1.
State the use of do-while loop.
2.
Write the syntax of
‘if’ statement.
3.
Write a note on
‘continue’ statement.
4.
What do you mean by
arrays?
5.
How will you
declare a two dimensional array?
Part
- B (3 x 5 = 15 Marks)
Answer any
THREE questions
6.
With a suitable
example, explain ‘if-else’ statement with a flow chart.
7.
Explain the working
of ‘while’ statement with an example.
8.
Explain the ‘for’ statement
with example.
9.
Write a note on ‘switch’
statement.
10. What is the difference between ‘break’ and
‘continue’ statements?
UNIT BASED ONLINE EXTERNAL EXAMINATION - OCTOBER – 2020 - ANALOG ELECTRONICS - 7BPH5C1 - SLOT II
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ALAGAPPA UNIVERSITY
KARAIKUDI – 630 003
UNIT BASED ONLINE EXTERNAL EXAMINATION - OCTOBER – 2020
FIFTH SEMESTER SLOT – II
ANALOG ELECTRONICS 7BPH5C1
Total Marks: 25 Time: 1.0 Hrs
SECTION A - Short Answer - 5 x 2 = 10 Marks
Answer All The Questions
1. Draw a diagram of a typical DC load line. Note Saturation and Cut-Off Points on it.
2. Define input impedance of a CE amplifier.
3. Define bandwidth.
4. Mention the applications of direct coupled CE amplifier.
5. How a power amplifier differs from a small signal amplifier.
SECTION B - Descriptive Type - 3 x 5 = 15 Marks
Answer Any Three Questions
6. Discuss the fixed base bias method of biasing a transistor.
7. Explain the AC load line analysis of an amplifier in CE mode.
8. Describe the construction and working of a transformer coupled amplifier. List its' advantage,disadvantages and applications.
9. Explain the operation of push-pull amplifier with neat circuit diagram.
10. Explain the construction and working of Hartley oscillator.
II INTERNAL TEST - OPTICS AND SPECTROSCOPY
Optics and Spectroscopy - 7BPH3C1
II Internal Test
Answer Any Four 4x5 = 20
Time : 1 Hr
1. Discuss Huygens explanation of double refraction in uniaxial crystals.
2. Discuss the working of quarter wave plate
3. Discuss the the quantum theory of Raman effect.
4. Compare Fresnel and Fraunhofer diffraction.
5. Explain the Fresnel diffraction at a circular aperture.
II INTERNAL TEST - ANALOG ELECTRONICS - 7BPH5C1- 2020
ANALOG ELECTRONICS - 7BPH5C1
II Internal Test
Answer Any Four 4x5 = 20
Time : 1 Hr
1.Explain Feed Back Resistor Bias.
2. Describe the construction and working of JFET
3. Describe the construction and working of RC coupled amplifier. List its' advantages,disadvantages and applications.
4. Compare different type of coupling schemes between amplifier stages.
5. List and discuss performance quantities of power amplifiers
2. Describe the construction and working of JFET
3. Describe the construction and working of RC coupled amplifier. List its' advantages,disadvantages and applications.
4. Compare different type of coupling schemes between amplifier stages.
5. List and discuss performance quantities of power amplifiers
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