The unit of measurement of noise is
A). Decibel
B). Hertz
C). Amplifier
D). Acoustics
Decibel
We measure sound intensity (also referred to as sound power or sound pressure) in units called decibels. Decibels (dB) are named in honor of Alexander Graham Bell, the inventor of both the telephone and the audiometer.
1. Eclipses occur due to which optical phenomena?
2. The scientist who first sent electromagnetic waves to distant places is
3. The wavelength at which the peak of intensity of blackbody radiation occurs
4. Which among the following is not a dwarf planet?
5. A hydrogen balloon floats up because of
6. Decibel is the unit used for measuring
7. Nuclear sizes are expressed in a unit named
8. ?Which of the following?electromagnetic waves has the longest wavelength?
9. In sunlight a rose appears red. In green light the same rose appears :
10. The mass of a star is two times the mass of the Sun. How it will come to an end ?