Exam Details
| Subject | Physics | |
| Paper | ||
| Exam / Course | Diploma in Civil Engineering (DCLE) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages 7 IBET-012I
.DIPLOMA IN CIVIL ENGINEERING (DCLE(G» I
DIPLOMA IN MECHANICAL ENGINEERING
I DCLEVI I DMEVI I DELVI I DECVI I
DCSVI I ACCLEVI I ACMEVI I ACELVI I
ACECVI I ACCSVI
0092.3
Term-End Examination
December, 2016
BET-012 PHYSICS
Time: 2 hours Maximum Marks: 70
Note: Question no. 1 is compul8ory. Attempt any four questions from questions no. 2 to 7. Use of scientific calculator is permitted.
1. Choose the correct answer from the given four alternatives. 14xl=14
The spherical shape of the rain drops is due to
atmospheric pressure
gravity
density of water
surface tension
A value of surface tension of 70 dynes/cm is equal to
7 x 10^2 N/m
7 x 10^3 N/m
70 x N/m
70 x N/m
The rate of loss of heat of a body depends on
mass of the body
temperature of the body
surface area of the body
Both and
Hot water in a flask in a room takes 15 minutes to cool from 70° to 60°C. The time taken to cool from 60° to 50°C will be
(i) 15 minutes
less than 15 minutes
more than 15 minutes
Can't be predicted
The ratio y =Cp/Cv for an ideal gas is
1
more than 1
less than 1
depends on the temperature of the gas
A body can radiate heat energy at
all temperatures
100°C
0°C
1000°C
Light is travelling from vacuum and enters in a glass medium. Which of the following characteristics of light will remain unchanged?
Velocity
Amplitude
Wavelength
Frequency
Suppose a plane mirror is approaching you at a speed of 10 cm/s and you see your image in it. At what speed will your image approach you?
10 cm/s
20 cm/s
40 cm/s
5 cm/s
The power of a lens is measured in
mm
cm
m
diopter
The illuminating power of a source is measured in terms of
Candle power
Phot
Lux
Lambert
The luminous flux is measured in
Candela
Lux
Steradian
Lumen
Ideally the resistance of the voltmeter should be
very low
low
high
very high
The magnetic susceptibility of paramagnetic substance has a
small negative value
small positive value
large negative value
large positive value
The Lorentz (magnetic) force depends on
the speed of the charge particle only
the velocity of the particle
the magnitude of the magnetic field
the velocity of the charge particle and the magnetic field B
2. Derive the Bernoulli's equation and discuss its significance.
Define coefficient of viscosity and find its dimension.
Enumerate the applications of viscosity.
3. Discuss the kinetic theory of gases arid derive the expression of pressure exerted by an ideal gas.
Differentiate between the longitudinal and transverse waves. Give one example of each wave. 10+4=14
4. Derive the expression of lens formula.
Define power of a lens. The focal length of a convex lens is 20 em. Calculate its power.
Discuss the phenomenon of total internal reflection of light. Give one example where a natural phenomenon could be explained on the basis of it.
5. State Coulomb's law. Calculate the force between two electrons 1·6 x 10-19 separated by a distance of 1 µm cm).
Calculate the Lorentz force on a charge particle (proton, q 1·6 x 10-19 moving in a field of 1 T and perpendicular to it. The velocity of the proton is 104 cm/s.
What is a secondary cell How does it work Give the examples of few secondary cells.
6. Differentiate amongst various types of magnetic materials. Give their examples.
Discuss the construction and working of galvanometer. 10+4=14
7. Write short notes on any four of the following 14x3 1/2 =14
Boyle's Law and Charles' Law
Various Modes of Heat Transfer
Avogadro's Law
Compound Microscope
Astronomical Telescope
Faraday's Law of Electrolysis
.DIPLOMA IN CIVIL ENGINEERING (DCLE(G» I
DIPLOMA IN MECHANICAL ENGINEERING
I DCLEVI I DMEVI I DELVI I DECVI I
DCSVI I ACCLEVI I ACMEVI I ACELVI I
ACECVI I ACCSVI
0092.3
Term-End Examination
December, 2016
BET-012 PHYSICS
Time: 2 hours Maximum Marks: 70
Note: Question no. 1 is compul8ory. Attempt any four questions from questions no. 2 to 7. Use of scientific calculator is permitted.
1. Choose the correct answer from the given four alternatives. 14xl=14
The spherical shape of the rain drops is due to
atmospheric pressure
gravity
density of water
surface tension
A value of surface tension of 70 dynes/cm is equal to
7 x 10^2 N/m
7 x 10^3 N/m
70 x N/m
70 x N/m
The rate of loss of heat of a body depends on
mass of the body
temperature of the body
surface area of the body
Both and
Hot water in a flask in a room takes 15 minutes to cool from 70° to 60°C. The time taken to cool from 60° to 50°C will be
(i) 15 minutes
less than 15 minutes
more than 15 minutes
Can't be predicted
The ratio y =Cp/Cv for an ideal gas is
1
more than 1
less than 1
depends on the temperature of the gas
A body can radiate heat energy at
all temperatures
100°C
0°C
1000°C
Light is travelling from vacuum and enters in a glass medium. Which of the following characteristics of light will remain unchanged?
Velocity
Amplitude
Wavelength
Frequency
Suppose a plane mirror is approaching you at a speed of 10 cm/s and you see your image in it. At what speed will your image approach you?
10 cm/s
20 cm/s
40 cm/s
5 cm/s
The power of a lens is measured in
mm
cm
m
diopter
The illuminating power of a source is measured in terms of
Candle power
Phot
Lux
Lambert
The luminous flux is measured in
Candela
Lux
Steradian
Lumen
Ideally the resistance of the voltmeter should be
very low
low
high
very high
The magnetic susceptibility of paramagnetic substance has a
small negative value
small positive value
large negative value
large positive value
The Lorentz (magnetic) force depends on
the speed of the charge particle only
the velocity of the particle
the magnitude of the magnetic field
the velocity of the charge particle and the magnetic field B
2. Derive the Bernoulli's equation and discuss its significance.
Define coefficient of viscosity and find its dimension.
Enumerate the applications of viscosity.
3. Discuss the kinetic theory of gases arid derive the expression of pressure exerted by an ideal gas.
Differentiate between the longitudinal and transverse waves. Give one example of each wave. 10+4=14
4. Derive the expression of lens formula.
Define power of a lens. The focal length of a convex lens is 20 em. Calculate its power.
Discuss the phenomenon of total internal reflection of light. Give one example where a natural phenomenon could be explained on the basis of it.
5. State Coulomb's law. Calculate the force between two electrons 1·6 x 10-19 separated by a distance of 1 µm cm).
Calculate the Lorentz force on a charge particle (proton, q 1·6 x 10-19 moving in a field of 1 T and perpendicular to it. The velocity of the proton is 104 cm/s.
What is a secondary cell How does it work Give the examples of few secondary cells.
6. Differentiate amongst various types of magnetic materials. Give their examples.
Discuss the construction and working of galvanometer. 10+4=14
7. Write short notes on any four of the following 14x3 1/2 =14
Boyle's Law and Charles' Law
Various Modes of Heat Transfer
Avogadro's Law
Compound Microscope
Astronomical Telescope
Faraday's Law of Electrolysis
Other Question Papers
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