If a sound note has intensity (I), equals to faintest audible sound (I₀), then will be it's sound level?
Answer: 0 dB
Explanation
The sound level β (in dB) is given by:
β = 10 log(I / I₀)
where I₀ is the threshold intensity (faintest audible sound). Given I = I₀:
β = 10 log(1) = 0 dB
This question appeared in
Past Papers (7 times)
ETEA 25 Years Past Papers Subject Wise (Solved) (2 times)
KPK Teacher Past Papers SST PST CT TT PET (2 times)
Secondary School Teacher SST Past Papers, Syllabus, Jobs (3 times)
This question appeared in
Subjects (1 times)
MATHS MCQS (1 times)
Related MCQs
- If Bilal moves, with a speed equal to 0.5 that of sound, away from a stationary organ producing a sound of frequency 'f', he would probably hear a sound of frequency
- If the intensity of one sound is 10 times the intensity of another the 2 sounds differ by
- The sound made with air passing through the nose and making the “ng” sound of “sing” is called:
- A tuning fork has a frequency of 300 Hz and produces a sound wave with a wavelength of 4 feet. What is the velocity of sound in air?
- When sound is reflected from floor ceiling or a wall, it mixes with the original sound and change its complexion, it is called as
- The preceding sound influencing the following sound is an instance of ______ assimilation?
- The characteristic of sound by which we can differentiate between shrill and grave sound is _____?
- By increasing the amplitude of sound waves, the loudness of sound _____?
- “Education is the creation of a sound mind in a sound body” is the saying of ______?
- The shortest wavelength for audible sound is
