Audiogram - Medical Physics - MCQs

1

Sound amplification in the outer ear (auditory canal)is affected by:

1

Prolonged exposure to loud noise can cause permanent damage to:

1

The loss of elasticity (stiffening) of the tympanic membrane will result in:

1

Sound intensity level (dB) and Loudness (phones) will have the same magnitude at the following frequency: (ref. the equal-loudness graph, Fig.1)

1

Refer to the equal-loudness curve above. At frequency of 4000 Hz the perceived sound is:

1

Sound Intensity Level is proportional to the logarithm of the ratio of incoming to threshold intensity SIL = 10·Log (I/I0). If intensity is increased by a factor of 100, what is change in SIL?

1

The sound intensity level in a room is 20 dB. A TV produces additional intensity level of 60 dB. What is the sound intensity in the room now?

3

Match the physical (objective) with the corresponding psychophysical (subjective) properties of the sound: (hint: multiple connections are possible)
A) Frequency
B) Intensity
C) Acoustic Spectrum

1

Sound frequency is:

1

The fundamental harmonic (frequency f0) in a complex sound is characterized by:

1

The speed of sound is calculated by the Newton-Laplace formula √ , where K is the stiffness coefficient, and ρ is the density of the material. If the density of the substance doubles, the speed of propagating sound wave will:

1

What is the speed of sound in air?

1

Does absorption of sound and the corresponding penetration depth depend on the wavelength?

1

Is it possible for internal organs to generate sounds that propagate to the skin, and are audible?

1

Noise can be defined as:

1

Damping oscillations are:

1

If the amplitude of a wave doubles (x2), what would happen to the period?

1

which of the following mediums, sound waves cannot propagate?

1

Which of the following waves are NOT mechanical?

1

A propagating sound wave transfers:

1

Which of the following factors has the most significant effect on the speed of propagation of sound waves?

1

Sound waves are:

1

The speed of sound (in non-dispersive medium):

1

Human ear is most sensitive to frequencies (refer to equal-loudness curve):

1

What is the meaning of 0 dB?

1

Timbre is:

1

The pitch of sound depends mostly on:

1

Which of the following does NOT have relevance to the reflection/transmission of sound waves?

1

Timbre is related to:

1

Weber-Fechner law (in psychophysics) describes a logarithmic relationship between the intensity of a sound wave and….:

1

Intensity is defined as:

1

When sound wave travels across two materials with similar acoustic impedance, at the boundary surface there will be:

1

The acoustic impedance Z of a substance is defined as the product of:

1

Why can’t we hear voices (speech) when submerged under water?

1

What property of sound is measured in decibels (dB)?

1

If the period of a wave is 0.02 s, what is its frequency? (Hint: how often does it vibrate in one second?)

1

A person screams in the mountain and hears the echo after 2 seconds. How far was the cliff that caused the reflection of the sound (echo)?

1

Which of the following properties of sound is measured in Hertz (Hz)?

1

When sound wave propagates between two media with similar impedance, there will be:

1

The human ear is sensitive to frequencies in the range:

1

What are the SI units for loudness?

1

The speed of sound in the human body is approximately:

1

The audiogram is a method for hearing loss evaluation by measuring the threshold hearing intensity of sound for different:

1

Pure tone is characterized by:

1

When sound wave travels from air into the human body, what happens to its speed?

Medical Physics Test sobre Audiogram - Medical Physics - MCQs, creado por Hussain Basheer el 23/11/2018.

Audiogram - Medical Physics - MCQs

Sound amplification in the outer ear (auditory canal)is affected by:

Prolonged exposure to loud noise can cause permanent damage to:

The loss of elasticity (stiffening) of the tympanic membrane will result in:

Sound intensity level (dB) and Loudness (phones) will have the same magnitude at the following frequency: (ref. the equal-loudness graph, Fig.1)

Refer to the equal-loudness curve above. At frequency of 4000 Hz the perceived sound is:

Sound Intensity Level is proportional to the logarithm of the ratio of incoming to threshold intensity SIL = 10·Log (I/I0). If intensity is increased by a factor of 100, what is change in SIL?

The sound intensity level in a room is 20 dB. A TV produces additional intensity level of 60 dB. What is the sound intensity in the room now?

Match the physical (objective) with the corresponding psychophysical (subjective) properties of the sound: (hint: multiple connections are possible) A) Frequency B) Intensity C) Acoustic Spectrum

Sound frequency is:

The fundamental harmonic (frequency f0) in a complex sound is characterized by:

The speed of sound is calculated by the Newton-Laplace formula √ , where K is the stiffness coefficient, and ρ is the density of the material. If the density of the substance doubles, the speed of propagating sound wave will:

What is the speed of sound in air?

Does absorption of sound and the corresponding penetration depth depend on the wavelength?

Is it possible for internal organs to generate sounds that propagate to the skin, and are audible?

Noise can be defined as:

Damping oscillations are:

If the amplitude of a wave doubles (x2), what would happen to the period?

which of the following mediums, sound waves cannot propagate?

Which of the following waves are NOT mechanical?

A propagating sound wave transfers:

Match the physical (objective) with the corresponding psychophysical (subjective) properties of the sound: (hint: multiple connections are possible)
A) Frequency
B) Intensity
C) Acoustic Spectrum