Sounds Waves And Motion — Part 2 MCQs with Explanations

An air column in a closed organ pipe is the correct answer to “Vibration of which among the following produces only odd harmonics”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

2.0 seconds is the correct answer to “A sound wave has a frequency of 3.5 kHz and its wavelength is 0.1 m. So how much time required to cover a distance of 700 meters”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

sound waves have larger wavelength is the correct answer to “Diffraction effect are more easily defected in case of a sound wave than light waves because”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Metals is the correct answer to “In which medium, velocity of sound is maximum”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Statement I is false, but statement II is true is the correct answer to “Statement I Sound waves can travel through vacuum. Statement II Light is an electromagnetic wave and can travel through vacuum.”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Its wavelength will decrease is the correct answer to “If the frequency of a sound wave is increased at a given velocity, what is the effect on its wavelength”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

25 Hz is the correct answer to “What is the frequency of the wave if the time interval of the vibrating object is 0.04 seconds”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

20000 Hz is the correct answer to “The frequency of an ultrasonic sound wave is greater than . . . . . . . .”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

damping force is small is the correct answer to “In case of a forced vibration, the resonance wave becames very sharp when the”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Only A is correct is the correct answer to “Which of the following statements about the speed of sound in different mediums is/are true at 25°C? A. Speed of sound in steel is 5960 m/s. B. The speed of sound in nickel is 6240 m/s.”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Longitudinal is the correct answer to “What are the sound waves in the air-”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Ultraviolet waves is the correct answer to “Which one of the following waves is used for detecting forgery in currency notes”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

solid matter is the correct answer to “Sound travels fastest in which of the following mediums”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

higher frequency is the correct answer to “Compared to audible sound waves, ultrasound waves have”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

2 seconds is the correct answer to “The time period of a second pendulum is”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

SONAR is the correct answer to “The device that uses ultrasonic waves to measure the distance, direction and speed of underwater objects is called:”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

solid is the correct answer to “Speed of sound is maximum in . . . . . . . .”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

not in a gas but in a metal is the correct answer to “Transverse waves can propagate”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Sound wave is the correct answer to “Which one of the following is not an electromagnetic wave”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Both the statements are true and statement II is the correct explanation of statement I is the correct answer to “Statement I Sound waves cannot propagate in vacuum. Statement II Sound waves are elastic waves and require a medium to propagate.”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

pitch is the correct answer to “The characteristic of sound which distinguishes a female voice from a male voice is called”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

density of solids is more is the correct answer to “Sound travels faster in solids than in gases because”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

45 dB is the correct answer to “As per the WHO, the safe noise level for a city is”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Amplitude modulation is the correct answer to “In television broadcast, the picture signals are transmitted by”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Audio and video both start simultaneously is the correct answer to “When T.V. is switched on”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

They do not require any type of medium to travel is the correct answer to “Which of the following statements regarding sound waves is not correct”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Both (A) and (R) are true and (R) is the correct explanation of (A) is the correct answer to “Assertion (A): Reveraberation mainly feels in large churches and in other large buildings. Reason (R): The walls, roof and ground may cause multiple sound reflections.”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Infrared is the correct answer to “Which of the following types of light carries a signal from a television remote to the device it controls”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Hertz is the correct answer to “What is the standard unit for measuring the frequency of a sound wave”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

in which a body moves to and fro is the correct answer to “Oscillatory motion is that motion”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

ultrasound is the correct answer to “What is called the sound wave above than frequencies of 30,000 Hz”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

generate ultrasonic sound waves is the correct answer to “The bats can fly in the dark because they”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Polarisation is the correct answer to “Which one of the following phenomena cannot be exhibited by sound waves”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

steel is the correct answer to “In . . . . . . . . speed of sound is the fastest.”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

adiabatic compression and rarefaction is the correct answer to “The propagation of sound waves in a gas involves”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Decibel is the correct answer to “Sound intensity is measured-”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

17 is the correct answer to “What is the minimum distance (in metres) required to hear an echo”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

Less than 20Hz is the correct answer to “What is the frequency of Infrasonic waves”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

By L is the correct answer to “The distance between two consecutive crests is L, then the wavelength is given by:”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.

0.45 m is the correct answer to “What is the wavelength of a sound wave in a medium with a frequency of 840 Hz and a speed of 380 m/s”. This question is standard in competitive examination syllabi for Sounds Waves And Motion.