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WorksheetsGEAS
Total questions: 31
Worksheet time: 30mins
One horsepower is equivalent to how many watts?
550
760
250
746
What is the total luminous flux radiated by a 1 candela source?
2π lm
4π lm
6π lm
π lm
A free falling object is acted upon by which of the following?
Weight of the
body
Air resistance
and
gravitational
pull
Gravitational
pull
Air resistance
What type of mirror that curves inward its center and converges parallel light to a single real focal point?
Convex mirror
Concave mirror
Spherical mirror
Chromatic mirror
What type of lens deviates parallel light outward as though it originated
at a single virtual focal point?
Magnifying lens
Convergent lens
Divergent lens
Microscopic lens
What refers to the time needed by an object in uniform circular motion to complete an orbit?
path time
orbit time
revolution
period
Which of the following is equivalent to the unit “farad”?
coulomb/volt
joule/volt
joule/coulomb
coulomb/joule
What is an elemental unit of energy?
Quartz
Quark
Photon
Quantum
The _______ of a moving object is the distance it covers in a time interval divided by the time interval
acceleration
instantaneous
speed
average speed
instantaneous
velocity
“The work done by the net force on a particle equals the change in the particle’s kinetic energy.” This statement is known as _________.
Law of
conservation of
energy
Work-energy
theorem
Law of
conservation of
work
Total work
theorem
For the same materials in contact, what is TRUE between coefficient of static
friction and coefficient of kinetic friction?
Coefficient of
static friction
is always less
than the
coefficient of
kinetic friction
Coefficient
of static
friction is
always equal to
the coefficient
of kinetic
Coefficient of
static friction
is always
greater than the
coefficient of
kinetic
friction.
Coefficient of
static friction
may be greater
than or less
than the coefficient of
kinetic
friction.
The vector product of two parallel or antiparallel vectors is always ______.
equal 1
greater than 1
less than 1
equal to 0
The _______ of a force about a particular axis is the product of the magnitude of the force and the perpendicular distance from the line of action of the force
to the axis.
inertia
mass moment
torque
moment
What is the index of refraction of oil?
1.4
1.33
1.5
2.4
What refers to the effect when a beam containing more than one frequency is split into a corresponding number of different beams when it is
refracted?
Flux
Refraction
Reflection
Dispersion
What will happen to the pressure if you lower the temperature of the mole of gas while maintaining a constant volume?
Pressure will decrease
Pressure will increase
Equal to 1
None of the above
What is the property of a substance which remains constant if no heat enters or leaves the system, while it does work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave?
Entropy
Enthalpy
Radiation
Conduction
A heat engine draws 800 J of heat from its high temperature source and discards 450 J of exhaust heat into its cold-temperature reservoir during each cycle. What is the engine’s thermal efficiency?
43 %
44 %
45 %
46 %
A 2.0-mol ideal gas system is maintained at a constant volume of 4.0 L. If 100 J of heat is added, what is the work done on the system?
1
0
2
10
What is the change in temperature of a 0.5 mol sample of oxygen if it absorbs 1000 J of heat at constant pressure?
69 K
96 K
86 K
68 K
A weather balloon is loosely filled with 2 m³ of helium at 1 atm and 27°C. The balloon is then released and by the time it has reached an elevation of 7000 m, the pressure dropped to 0.5 atm and the balloon has expanded. If the pressure at this elevation is - 48°C, what is the new volume of the balloon?
3.1 m³
3.3 m³
3.2 m³
3.5 m³
Standard atmospheric pressure is 1.013 x 10^5 Pa (this is one atmosphere). At 0°C = 273.15K, one mole of any ideal gas occupies the same volume. What is this volume?
20.4 liters
22.4 liters
24.4 liters
23.4 liters
What is the coefficient of performance of a refrigerator if it needs at least 2 kW for it to operate and is removing heat from its contents at a rate of 200 kJ/min?
2.0
1.67
1.55
1.33
If the temperature and volume of a sample of an ideal gas are both doubled, then the pressure:
quadruple
halved
doubled
remains unchanged
The ratio of stress to strain, within the proportional limit, is called ________.
Young`s modulus
Bulk modulus
Poisson's ratio
Strain Ratio
The maximum shear stress in a thin cylindrical shell, when subjected to an internal pressure (p) is equal to _____.
pD/16t
pD/8t
pD/4t
pD/2t
The longitudinal or axial stress in a thin cylindrical shell of diameter (D), length (L), and thickness (t), when subjected to an internal pressure (p) is equal to _____.
pD/4t
pD/8t
pD/12t
pD/16t
An object of height 11 cm is placed 48 cm in from of a diverging lens with a focal length of - 24.5 cm. What is the magnification?
1/3
2/3
1/4
1/8
The convex surface of a meniscus lens has radius of curvature of 25 cm while the concave surface has radius of curvature of 15 cm. What is its focal length of the lens if the index of refraction is 1.52?
– 71 cm
71 cm
– 69 cm
69 cm
The index of refraction for red light in arsenic trioxide is 2.010 and the index of refraction for blue light is 2.023. Find the difference between the angles of refraction if white light is incident at an angle of 65°.
0.2°
0.3°
0.4°
0.5°
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