Question 12 Sound intensity is measured in the deciBel scale ncorrect Mark 0.00

Question

Question 12 Sound intensity is measured in the deciBel scale ncorrect Mark 0.00 out of 1.00 Select one a. It is a convenient way to express the full range of sound pressures we can hear b. It allows us to express the hearing thresholds relative to normal hearing sensitivity X c. It is directly related to pitch so we can easily see where hearing loss occurs d. It is a logarithmic scale e. It is what the ear is most sensitive to Question 13 Incorrect Mark 0.00 out of 1.00 Our hearing sensitivity is greater with air conduction than with bone conduction because Select one: a. Of the amplification provided by the ossicles b. Bone is more compressible than is air c. Of the higher resitjvity of the eardrum d. Audiometers produce more intensity with air than with bone conduction X e. Of the lower impedance provided by the bone o

Explanation / Answer

12. Decibel is used to measure the loudness of the sound.

loudness (dB) = 10log(p2/p1)

where p1,p2 is power.

we can see that the dB is measured in logarithmic scale. .

hence, option (d) is correct

13. In the air conduction, the sound travels via air medium and reaches the eardrum. The eardrum contains ossicles, which are in the middle ear and amplify the sound with a multiplication factor of 23.

But in bone conduction, the sound is not amplified.

Hence, our hearing sensitivity (provided we are not suffering from deafness), air conduction is better than bone conduction.

Hence, option (a) is correct.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.