A noise level of 100 decibel would correspond to :
just audible sound
ordinary conversation
sound from a noisy street
noise from a machine shop
The frequency of ultrasonic vibrations is
more than 20000 Hz
between 20 and 10000 Hz
between 20 and 20000 Hz
less than 20 Hz
If 15 waves are produced per second, what is the frequency?
20 Hz
30 Hz
15 Hz
1/15 Hz
The S.I unit of Specific resistance (or) resistivity is
ohm/metre
ohm-metre
ohm
Ohm-Metre
Which of the following is carried by the waves from one place to another?
mass
velocity
wavelength
energy
Which of the following statement best describes frequency?
the maximum disturbance caused by a wave
the number of complete vibrations per second
the distance between one crest of a wave and the next one
the distance travelled by a wave per second
Hz is the unit of
amplitude
frequency
time period
Sound is a form of
force
power
tendency
Audible frequency range is
20 Hz to 2 kHz
20 Hz to 200 Hz
20 Hz to 20 kHz
20 Hz to 200 kHz
When the same note is played on a sitar and a flute, the sound produced can be distinguished from each other because of the difference in
pitch, loudness and quality
pitch and loudness
loudness only
quality only
