Loudness of sound varies directly with vibrating body’s……....
a) Amplitude
b) Quality
c) Quantity
d) Pitch
Loudness of sound greatly depends upon: PST –P-3---(date not confirm)
a) amplitude of vibration
b) size of moving objects
c) height of object
d) nature of object
Sensation of sound persists in our brain for about………..
a) 0.001s
b) 0.2s
c) 0.1s
d) 10s
Sound energy passing per second through a unit area held perpendicular is called.
a) Intensity
b) Frequency
c) Quality
d) Amplitude
Sound passes from one place to another in the form of…………
a) Rays
b) Waves
c) Energy
d) Light
All of these are form of energy EXCEPT: NTS Past -------CT Test
a) Light
b) Sound
c) Air
d) Heat
