Science Bowl Practice Questions

Physics - 15

y) 60 degrees
z) 90 degrees

ANSWER: Z -- 90 DEGREES

91.

Multiple Choice: A 10 volt battery connected to a capacitor delivers a charge of 0.5 coulombs. The
capacitance of the capacitor is:

w) 2 x 10-2 farads
x) 5 x 10-2 farads
y) 2 farads
z) 5 farads

ANSWER: X -- 5 x 10-2 FARADS

92.

Multiple Choice: Two light rays will interfere constructively with maximum amplitude if the path
difference between them is:

w) one wavelength
x) one-half wavelength
y) one-quarter wavelength
z) one-eighth wavelength

ANSWER: W -- ONE WAVELENGTH

93.

Multiple Choice: Light is normally incident on a thin soap film and is reflected. If the wavelength of
this light is "L" and the index of refraction of the soap film is "N", complete destructive interference
will occur for a film thickness of:

w) L / 8N
x) L / 4N
y) L / 2N
z) 3L / 4N

ANSWER: Y -- L / 2N

94.

Multiple Choice: The Michelson interferometer was designed to study the nature of:

w) water waves
x) sound waves
y) an "ether"
z) sunlight

ANSWER: Y -- AN "ETHER"

95.

Multiple Choice: The Millikan experiment showed that electric charge was:

w) negative
x) quantized
y) positive
z) unmeasurable

ANSWER: X -- QUANTIZED

96.

Multiple Choice: When a metal becomes a superconductor, there is a tremendous decrease in its:

w) total volume
x) electrical resistance
y) length
z) density