WorksheetsExtra Credit TMS 11th
Total questions: 15
Worksheet time: 14mins
Name
Class
Date
1.
Which concept does the first law of thermodynamics describe?
a)
Conservation of mass
b)
Conservation of energy
c)
work-heat equivalence
d)
Conservation of momentum
2.
What occurs when Q = 0, so that the first law of thermodynamics takes the form of
ΔU = -W?
ΔU = -W?
a)
an isovolumetric process
b)
an isothermal process
c)
an adiabatic process
d)
an isolated system
3.
A repelling force occurs between two charged objects when the charges are of
a)
unlike signs.
b)
like signs
c)
equal magnitude
d)
unequal magnitude
4.
Both insulators and conductors can be charged by
a)
induction
b)
polarization
c)
contact
d)
frcition
5.
For a conductor that is in electrostatic equilibrium, any excess charge
a)
flows to the ground
b)
resides entirely on the conductor’s outer surface.
c)
resides entirely on the conductor’s interior.
d)
resides entirely in the center of the conductor.
6.
What does the following image represent
a)
lines of a force representing the electric field surrounding two objects that have equal magnitude charges of opposite polarity.
b)
lines of a force representing the electric field surrounding two objects that have equal magnitude charges of same polarity.
c)
lines of a force representing the electric field surrounding two objects that have different magnitude charges of same polarity.
7.
a)
-5.0 x 102 N
b)
5.0 x 10 5 N
c)
2.5 x 10 2 N
d)
8 x 10 -6 N
8.
a)
1.27 x 10 -17 C
b)
1.9 x 10 -16 C
c)
4.7 x 10 -6
9.
Which is the most correct statement regarding the drawing of electric field lines?
a)
Electric field lines always connect from one charge to another.
b)
Electric field lines always form closed loops.
c)
Electric field lines can start on a charge of either polarity.
d)
Electric field lines never cross each other.
10.
The unit of specific heat capacity is:
a)
(a) joules per kilogram
b)
joules
c)
joules per kilogram Celsius
d)
cubic meters
11.
The quantity of heat required to raise the temperature of 0.500 kg of iron by 2◦C, given that the specific heat capacity is 500 J/(kg ◦C), is:
a)
500 KJ
b)
0.5 KJ
c)
2 KJ
d)
250 KJ
12.
Which of the following statements is true?
a)
Heat is the degree of hotness or coldness of a body
b)
Heat energy that flows to or from a substance while the temperature remains constant is called sensible heat
c)
The unit of specific latent heat of fusion is J/(kg K)
d)
A cooker-grill is a practical application of radiation
13.
Which mechanism of heat transfer is involved in heating a pot with water on a stove?
a)
Convection
b)
Conduction
c)
Radiation
d)
Induction
14.
A mixture of gas expands from 0.03 m3 to 0.06 m3 at a constant pressure of 1 x 10 6 Pa and absorbs 84000 J of heat during the process. The change in internal energy of the mixture is
a)
30 x 10 6 J
b)
84 x 10 6 J
c)
54 x 10 6 J
d)
114 x 10 6 J
15.
Which of the following is the correct statement of the second law of thermodynamics?
a)
There is a definite amount of mechanical energy, which can be obtained from a given quantity of heat energy.
b)
It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy into work.
c)
it is impossible to transfer heat from a body at a lower temperature to a higher temperature, without the aid of an external source.
d)
all of the above
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