10th Physics Chapter 2: Sound

Sr #	Questions	A	B	C	D
1	The time taken for one complete vibration is called:	Wavelength	Amplitude	Frequency	Time period
2	The speed of sound generally increases with:	Decreasing temperature	Increasing temperature	Decreasing humidity	Increasing humidity
3	Which of the following is the fastest medium for the propagation of sound?	Air	Water	Steel	Vacuum
4	Which unit is used to measure sound intensity level?	Decibel (dB)	Hertz (Hz)	Newton (N)	Pascal (Pa)
5	Which of the following conditions is necessary for the formation of an echo?	The surface must be rough	The surface must be smooth	The distance between the source and the reflecting surface must be small	The distance between the source and the reflecting surface must be large
6	The measure of the maximum displacement of particles in the source of a sound wave is called:	Vibrational amplitude	Surface area	Sensitivity	Quality
7	What is the phenomenon of sound reflection that occurs when sound waves bounce off a surface?	Refraction	Diffraction	Interference	Echo
8	Which term refers to the maximum displacement of particles from their mean position in a sound wave?	Wavelength	Amplitude	Frequency	Time period
9	The size of the vibrating surface of a sound source affects the:	Loudness	Pitch	Amplitude	Wavelength
10	What is the nature of sound waves?	Transverse	Electromagnetic	Longitudinal	Surface
11	Which type of sound wave requires a medium for propagation?	Electromagnetic waves	Mechanical waves	Transverse waves	Surface waves
12	Sound that interferes with desired sounds and disrupts communication or other activities is referred to as:	Echo	Noise	Vibration	Resonance