SPI: Snell's Law and Refraction; Time of
Flight Exam Questions And Answers
What event does Snell's Law govern?
A. transmission
B. refraction
C. impedance -
correct answer ✅B. Snell's Law defines the physics of refraction.
Which of the following best describes the process described by
Snell's law?
A. reflection with normal incidence
B. reflection with oblique incidence
C. transmission with normal incidence
D. transmission with oblique incidence -
correct answer ✅D. Snell's Law defines the physics of refraction.
Refraction describes the behavior of sound beams that transmit
after striking a boundary obliquely.
Refraction is "transmission with a bend."
T/F: Refraction occurs at the border between two media if and only
if there is oblique incidence of the wave at the boundary. -
correct answer ✅TRUE. Refraction cannot occur if a wave is
, SPI: Snell's Law and Refraction; Time of
Flight Exam Questions And Answers
normally incident to the boundary between two media. It can occur
only if the incident wave is oblique to the boundary.
What conditions are necessary for refraction to occur at a boundary
between two media?
A. unequal acoustic impedances and normal incidence at the
boundary
B. unequal densities of the media and normal incidence at the
boundary
C. dissimilar propagation speeds and oblique incidence at the
boundary
D. different elasticities of the media and oblique incidence -
correct answer ✅C. The two conditions required for refraction are:
1. a sound wave must be obliquely incident to the border between
two media.
2. the media on either side of the border must have dissimilar
propagation speeds.
Refraction occurs during transmission of a wave from one medium
to another.
T/F: Refraction always occurs at the interface between two media
when the propagation speeds of the media are unequal. -
Flight Exam Questions And Answers
What event does Snell's Law govern?
A. transmission
B. refraction
C. impedance -
correct answer ✅B. Snell's Law defines the physics of refraction.
Which of the following best describes the process described by
Snell's law?
A. reflection with normal incidence
B. reflection with oblique incidence
C. transmission with normal incidence
D. transmission with oblique incidence -
correct answer ✅D. Snell's Law defines the physics of refraction.
Refraction describes the behavior of sound beams that transmit
after striking a boundary obliquely.
Refraction is "transmission with a bend."
T/F: Refraction occurs at the border between two media if and only
if there is oblique incidence of the wave at the boundary. -
correct answer ✅TRUE. Refraction cannot occur if a wave is
, SPI: Snell's Law and Refraction; Time of
Flight Exam Questions And Answers
normally incident to the boundary between two media. It can occur
only if the incident wave is oblique to the boundary.
What conditions are necessary for refraction to occur at a boundary
between two media?
A. unequal acoustic impedances and normal incidence at the
boundary
B. unequal densities of the media and normal incidence at the
boundary
C. dissimilar propagation speeds and oblique incidence at the
boundary
D. different elasticities of the media and oblique incidence -
correct answer ✅C. The two conditions required for refraction are:
1. a sound wave must be obliquely incident to the border between
two media.
2. the media on either side of the border must have dissimilar
propagation speeds.
Refraction occurs during transmission of a wave from one medium
to another.
T/F: Refraction always occurs at the interface between two media
when the propagation speeds of the media are unequal. -
