When the Moon is 90 west of the Sun, the Moon is in the ______________ phase.
Fill in the blank(s) with correct word
[Ques. 2] A component in an automobile 12-V electrical system has a resistance of 90 . How much current is in the component when in operation?
a. 100 A
b. 0.13 A
c. 7.5 A
d. 1100 A
[Ques. 3] When the adjustable mirror on the Michelson interferometer is moved 20 wavelengths, how many fringe pattern shifts would be counted?
a. 5
b. 10
c. 20
d. 40
e. 80
[Ques. 4] When the Moon appears on an observer's meridian at midnight, it is called a(n) ______________ moon.
Fill in the blank(s) with correct word
[Ques. 5] If work is done on an electric charge, a ______________ is present.
a. resistance
b. current
c. voltage
d. transformer
e. bigger charge
[Ques. 6] When a central dark fringe is observed in reflection in a circular interference pattern, waves reflected from the upper and lower surfaces of the medium must have a phase difference, in radians, of
a. 0.
b. /2.
c. .
d. 3/2.
e. 2.
[Ques. 7] During the 7-3/8 days between the new and first-quarter phases, the Moon is called a(n) ______________ moon.
Fill in the blank(s) with correct word
[Ques. 8] The electrical power dissipated in an appliance depends on
a. voltage.
b. current.
c. resistance.
d. all of these.
[Ques. 9] In an interference pattern, the wavelength and frequency are
a. the same in both the regions of constructive interference and the regions of destructive interference.
b. greater in regions of constructive interference than in regions of destructive interference.
c. smaller in regions of constructive interference than in regions of destructive interference.
d. unchanged in regions of destructive interference but greater in regions of constructive interference.
e. unchanged in regions of destructive interference but smaller in regions of constructive interference.
[Ques. 10] The orbital period of the Moon with respect to a star (other than the Sun) is called a(n) ______________ month.
Fill in the blank(s) with correct word
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