B.Tech I (First)Semester Examination 2021-22
Course Code:EAS112 Paper ID:09619112
Engineering Physics
Time: 3 Hours Max. Marks: 60
Note: Attempt all questions.
Q1. Answer the following (limit your answer to 50 words): Marks
a) What is principle of superposition? 2
Or
Light of wavelength 6000 falls normally on a thin wedge shaped film of refractive index 2
1.4, forming fringes that are 2 mm apart. Find the angle of wedge.
b) What is the difference between interference and diffraction? 2
Or
Differentiate between limit of resolution and resolving power of an optical instrument. 2
c) If the plane of vibration of the incident beam makes an angle of 300 with the optic axis, 2
compare the intensities of extraordinary and ordinary light.
Or
What is specific rotation? 2
d) What are extrinsic semiconductors? 2
Or
What information can be obtained by the sign of Hall coefficient? 2
e) Galilean transformations violate both the postulates of special theory of relativity. 2
Comment on it.
Or
State the fundamental requirement for the existence of massless particles on the basis of 2
special theory of relativity. Give one example of such a particle.
2. What is meant by the interference due to the division of wavefront? Discuss the theory of 10
Fresnel‘s biprism and apply it to determine the wavelength of monochromatic light.
Or
Explain different types of bonds that exist in metals. List the important physical properties 10
of metallic crystals.
3. Classify Fresnel and Fraunhofer types of diffraction. Obtain intensity distribution in the 10
diffraction pattern due to a single slit. Also plot the intensity distribution. What is the
angular width of central maximum?
Or
Explain Rayleigh‘s criterion of resolution. Deduce an expression for the resolving power of 10
a telescope.
4. Discuss the working of quarter and half wave plates. 10
Calculate the thickness of (i) a quarter wave plate, and (ii) a half wave plate. Given that:
.
Or
What is Hall effect and Hall voltage? 10
, A sample of silicon is doped with 1017 phosphorus atoms/cm3. What would you expect to
measure for its resistivity? What Hall voltage would you expect in a sample 100 thick if
-5 2
Ix= 1mA and Bz= 10 Wb/cm ?
Given that = 700 cm2/V-s.
5. Distinguish between Polarized andunpolarized light.Explain Brewster‘s law and examine 10
that if the angle of incidence of unpolarized light is equal to the polarizing angle, the
reflected and refracted rays are at right angles to each other.
Determine the polarizing angle for crown glass if refractive index for it is 1.52.
Or
What are inertial and non-inertial frames of reference? Explain with suitable examples. 10
Obtain Galilean transformation equations and show that for v c, Lorentz transformations
reduce to them.
6. What are Newton‘s rings? For Newton‘s rings formed in reflected light show that the 10
diameters of bright rings are proportional to the square root of odd natural numbers. What
change is observed in the central spot for Newton‘s rings due to transmitted light?
Or
Derive velocity addition theorem and make use of it to show that no signal can travel faster 10
than velocity of light.
, B.Tech I (First)Semester Examination 2021-22
Course Code:EAS113 Paper ID:09619113
Engineering Chemistry
Time: 3 Hours Max. Marks: 60
Note: Attempt all questions.
Q1. Answer the following (limit your answer to 50 words): Marks
a) What are the defects of boilers due to presence of hardness? 2
Or
What are the different units to express hardness of water? How these units of hardness are 2
related to each other?
b) What is cetane number? How cetane number is different from octane number? 2
Or
What is the significance of presence of moisture and volatile matter in coal? 2
c) What are lubricants? How are they classified? 2
Or
What are refractory materials? What is their importance in industry? 2
d) Explain the term ―functionality‖ of a monomer with an example. 2
Or
What is a condensation polymer? Give an example. 2
e) What are the possible electronic transitions when energy is absorbed by a molecule in UV 2
region?
Or
What are the conditions for a molecule to absorb IR spectrum? 2
2. What are the characteristics of municipal water? Describe how water is made suitable for 10
domestic use?
Or
What are the major disadvantages of hard water when used for: 3+3+4=10
a) domestic purposes
b) industrial purposes
c) steam generation in boilers
3. How is the calorific value of a fuel determined by bomb calorimeter? Explain with the help 10
of a diagram.
Or
Write notes on any two of the following: 5+5=10
a) Knocking and chemical structures.
b) What is meant by carbonization? How is carried out in a bee-hive
oven?
c) Pulverized coal
4. Explain boundary lubrication and extreme pressure lubrication. When are they done? 10
Or
Write short notes on: 3+3+4=10
a) Different types of cement
b) Properties of lime relevant to its cementing property
c) ISI specification of cement
, 5. Give method of preparation and uses of polymers: 2.5x4=10
a) Nylon 6
b) PVC
c) Teflon
d) Terylene
Or
Give methods of preparation and important uses of the following synthetic rubbers: 5+5=10
a) Buna S
b) Polyurethanes
6. Discuss the application of following spectroscopic techniques: 5+5=10
a) IR spectroscopic
b) UV spectroscopy
Or
Discuss the principle and processes involved in determination of (i) biological and (ii) 5+5=10
chemical oxygen demands.
Course Code:EAS112 Paper ID:09619112
Engineering Physics
Time: 3 Hours Max. Marks: 60
Note: Attempt all questions.
Q1. Answer the following (limit your answer to 50 words): Marks
a) What is principle of superposition? 2
Or
Light of wavelength 6000 falls normally on a thin wedge shaped film of refractive index 2
1.4, forming fringes that are 2 mm apart. Find the angle of wedge.
b) What is the difference between interference and diffraction? 2
Or
Differentiate between limit of resolution and resolving power of an optical instrument. 2
c) If the plane of vibration of the incident beam makes an angle of 300 with the optic axis, 2
compare the intensities of extraordinary and ordinary light.
Or
What is specific rotation? 2
d) What are extrinsic semiconductors? 2
Or
What information can be obtained by the sign of Hall coefficient? 2
e) Galilean transformations violate both the postulates of special theory of relativity. 2
Comment on it.
Or
State the fundamental requirement for the existence of massless particles on the basis of 2
special theory of relativity. Give one example of such a particle.
2. What is meant by the interference due to the division of wavefront? Discuss the theory of 10
Fresnel‘s biprism and apply it to determine the wavelength of monochromatic light.
Or
Explain different types of bonds that exist in metals. List the important physical properties 10
of metallic crystals.
3. Classify Fresnel and Fraunhofer types of diffraction. Obtain intensity distribution in the 10
diffraction pattern due to a single slit. Also plot the intensity distribution. What is the
angular width of central maximum?
Or
Explain Rayleigh‘s criterion of resolution. Deduce an expression for the resolving power of 10
a telescope.
4. Discuss the working of quarter and half wave plates. 10
Calculate the thickness of (i) a quarter wave plate, and (ii) a half wave plate. Given that:
.
Or
What is Hall effect and Hall voltage? 10
, A sample of silicon is doped with 1017 phosphorus atoms/cm3. What would you expect to
measure for its resistivity? What Hall voltage would you expect in a sample 100 thick if
-5 2
Ix= 1mA and Bz= 10 Wb/cm ?
Given that = 700 cm2/V-s.
5. Distinguish between Polarized andunpolarized light.Explain Brewster‘s law and examine 10
that if the angle of incidence of unpolarized light is equal to the polarizing angle, the
reflected and refracted rays are at right angles to each other.
Determine the polarizing angle for crown glass if refractive index for it is 1.52.
Or
What are inertial and non-inertial frames of reference? Explain with suitable examples. 10
Obtain Galilean transformation equations and show that for v c, Lorentz transformations
reduce to them.
6. What are Newton‘s rings? For Newton‘s rings formed in reflected light show that the 10
diameters of bright rings are proportional to the square root of odd natural numbers. What
change is observed in the central spot for Newton‘s rings due to transmitted light?
Or
Derive velocity addition theorem and make use of it to show that no signal can travel faster 10
than velocity of light.
, B.Tech I (First)Semester Examination 2021-22
Course Code:EAS113 Paper ID:09619113
Engineering Chemistry
Time: 3 Hours Max. Marks: 60
Note: Attempt all questions.
Q1. Answer the following (limit your answer to 50 words): Marks
a) What are the defects of boilers due to presence of hardness? 2
Or
What are the different units to express hardness of water? How these units of hardness are 2
related to each other?
b) What is cetane number? How cetane number is different from octane number? 2
Or
What is the significance of presence of moisture and volatile matter in coal? 2
c) What are lubricants? How are they classified? 2
Or
What are refractory materials? What is their importance in industry? 2
d) Explain the term ―functionality‖ of a monomer with an example. 2
Or
What is a condensation polymer? Give an example. 2
e) What are the possible electronic transitions when energy is absorbed by a molecule in UV 2
region?
Or
What are the conditions for a molecule to absorb IR spectrum? 2
2. What are the characteristics of municipal water? Describe how water is made suitable for 10
domestic use?
Or
What are the major disadvantages of hard water when used for: 3+3+4=10
a) domestic purposes
b) industrial purposes
c) steam generation in boilers
3. How is the calorific value of a fuel determined by bomb calorimeter? Explain with the help 10
of a diagram.
Or
Write notes on any two of the following: 5+5=10
a) Knocking and chemical structures.
b) What is meant by carbonization? How is carried out in a bee-hive
oven?
c) Pulverized coal
4. Explain boundary lubrication and extreme pressure lubrication. When are they done? 10
Or
Write short notes on: 3+3+4=10
a) Different types of cement
b) Properties of lime relevant to its cementing property
c) ISI specification of cement
, 5. Give method of preparation and uses of polymers: 2.5x4=10
a) Nylon 6
b) PVC
c) Teflon
d) Terylene
Or
Give methods of preparation and important uses of the following synthetic rubbers: 5+5=10
a) Buna S
b) Polyurethanes
6. Discuss the application of following spectroscopic techniques: 5+5=10
a) IR spectroscopic
b) UV spectroscopy
Or
Discuss the principle and processes involved in determination of (i) biological and (ii) 5+5=10
chemical oxygen demands.
