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Unformatted text preview: 33. A thin lens with focal length f is to be used as
a magnifying glass. Which of the following
statements regarding this situation is true?
a. A converging lens must be used, and the
object be placed at a distance greater
than 2 from the lens.
b. A diverging lens must be used, and the
object be placed between f and 2f from
c. A converging lens must be used, and
the object be placed at a distance less
than f from the lens.
d. A diverging lens must be used, and the
object be placed at any point other than
the focal point.
34. A lens with focal length f=35 cm is used to
view a clock 85 cm from the lens. How far
from the lens does the clock appear?(select the
a. 120 cm
b. 25 cm
c. 60 cm
d. 50 cm
35. A 100 Watt light bulb is connected to a 120
volt source. What is the resistance of the
filament in the bulb (in Ohms)?
36. Find the equivalent capacitance across
terminals A and B. That is, find the reading
on a capacitance meter placed across terminals
A and B of the circuit shown in the figure
below. C1 = 3.0 µF, C2 = 3.0 µF, C3 = 10.0 µF
d. 16.00 µF
3.75 µF 37. An oscillator at a frequency of 1.25 Hz will, to two significant figures, make 100
vibrations in a time of
d. 125 s
80 s 38. A mass m = 2.0 kg is attached to a spring
having force constant k = 300 N/m as shown: The mass is displaced from its equilibrium
position and released. Its frequency of simple
harmonic oscillations, to three significant
a. 12.3 Hz
b. 0.533 Hz
c. 0.01 Hz
d. 1.95 Hz
39. Two waves with the same frequency and
wavelength but different amplitudes are
added. If A1 = 2A2 and the waves are 180° out
of phase, then the amplitude of the resulting
wave will be:
b. same as A1
c. same as A2
40. In general, doubling the amplitude of a wave:
a. doubles the frequency
b. Halves the period
c. Quadruples the energy
d. doubles the speed
41. Ocean waves with a wavelength of 120 m
approach the shor...
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This note was uploaded on 03/23/2011 for the course CHEM 100 taught by Professor Vallis during the Spring '11 term at Dalhousie.
- Spring '11