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 | June, 2016 | |
| City, State | new delhi, |
Question Paper
1. Choose the correct answer from the given four alternatives.
One Poise is equal to
10 Pa.s
100 Pa.s
Pa.s
Pa.s
The surface tension of water at 20°C is about
72·6 x
72·6 x
72·6 x
None of these
The fluid pressure at a point within the fluid is given by
p/gh
P g/ph
P=pgh
p^2gh
For an ideal gas Cp-Cv is equal to
Zero
R
2R
3R
For monoatomic ideal gas the molar heat capacity at constant volume is
R
3/2 R
5/2 R
2R
According to Stefan-Boltzmann law, the heat energy radiated per second per unit area of a black body is proportional to
T
T^4
The value of Stefan-Boltzmann constant is about
5.6 x
5.6 x
5.6 x
None of these
The temperature at which the numerical values of Celsius and Fahrenheit scales are same is
0 deg.
-32 deg.
-40 deg.
40 deg.
The magnetic susceptibility of diamagnetic material is
zero
small positive value
large positive value
small negative value
An electron is moving along the direction of magnetic field B with velocity v. The force on this electron is
qvB
-qvB
zero
infinite
The correct expression of Lorentz force is
F =qE +qV x B
F =qE +qB x V
F =qE
None of these
The speed of sound in air is approximately
300 m/s
330 m/s
350 m/s
500 m/s
The phenomenon of mirage can be, explained on the basis of
reflection
refraction
dispersion
total internal reflection
For ohmic conductors, the plot between the current and voltage is a
parabola
straight line
hyperbola
None of these
What is Hooke's law Explain the stress-strain curve for a metallic wire.
State and explain Ohm's law.
Define stress and strain.
What are the different modes of heat transfer? Explain them by giving examples.
Find the expression of root mean square speed of ideal gas molecules.
Discuss the factors affecting the speed of sound in a gaseous medium
Derive the expression of mirror formula
1/f 1/u 1/v
Explain the phenomenon of mirage in detail.
Show that for parallel combination of resistances R1 and R2, the equivalent resistance R is given by
1/R 1/u 1/v
Calculate the resistivity of a material of a wire 2 m long, 0·2 mm in diameter and having a resistance of 4 ohms.
What is drift velocity? Find the expression for drift velocity of electrons.
Find the expression of magnetic field at a distance from a long current carrying wire.
What are the different types of magnetic materials Discuss them in detail. Give the examples of each type of materials.
Briefly discuss the working of cyclotron.
7. Write short notes on any four of the following:
Archimedes principle
Reynolds number
Avogadro's law
Total internal reflection
Wheatstone bridge
Potentiometer
One Poise is equal to
10 Pa.s
100 Pa.s
Pa.s
Pa.s
The surface tension of water at 20°C is about
72·6 x
72·6 x
72·6 x
None of these
The fluid pressure at a point within the fluid is given by
p/gh
P g/ph
P=pgh
p^2gh
For an ideal gas Cp-Cv is equal to
Zero
R
2R
3R
For monoatomic ideal gas the molar heat capacity at constant volume is
R
3/2 R
5/2 R
2R
According to Stefan-Boltzmann law, the heat energy radiated per second per unit area of a black body is proportional to
T
T^4
The value of Stefan-Boltzmann constant is about
5.6 x
5.6 x
5.6 x
None of these
The temperature at which the numerical values of Celsius and Fahrenheit scales are same is
0 deg.
-32 deg.
-40 deg.
40 deg.
The magnetic susceptibility of diamagnetic material is
zero
small positive value
large positive value
small negative value
An electron is moving along the direction of magnetic field B with velocity v. The force on this electron is
qvB
-qvB
zero
infinite
The correct expression of Lorentz force is
F =qE +qV x B
F =qE +qB x V
F =qE
None of these
The speed of sound in air is approximately
300 m/s
330 m/s
350 m/s
500 m/s
The phenomenon of mirage can be, explained on the basis of
reflection
refraction
dispersion
total internal reflection
For ohmic conductors, the plot between the current and voltage is a
parabola
straight line
hyperbola
None of these
What is Hooke's law Explain the stress-strain curve for a metallic wire.
State and explain Ohm's law.
Define stress and strain.
What are the different modes of heat transfer? Explain them by giving examples.
Find the expression of root mean square speed of ideal gas molecules.
Discuss the factors affecting the speed of sound in a gaseous medium
Derive the expression of mirror formula
1/f 1/u 1/v
Explain the phenomenon of mirage in detail.
Show that for parallel combination of resistances R1 and R2, the equivalent resistance R is given by
1/R 1/u 1/v
Calculate the resistivity of a material of a wire 2 m long, 0·2 mm in diameter and having a resistance of 4 ohms.
What is drift velocity? Find the expression for drift velocity of electrons.
Find the expression of magnetic field at a distance from a long current carrying wire.
What are the different types of magnetic materials Discuss them in detail. Give the examples of each type of materials.
Briefly discuss the working of cyclotron.
7. Write short notes on any four of the following:
Archimedes principle
Reynolds number
Avogadro's law
Total internal reflection
Wheatstone bridge
Potentiometer
Other Question Papers
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