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After Online tests for all subjects now it’s time to prepare the next level for Punjab board students to prepare their short question section here. We have a complete collection of all classes subject wise and chapter wise thousands questions with the right answer for easy understanding.
Here we are providing complete chapter wise Physics questions and Answers for the 10th class students. All the visitors can prepare for their 10th class examination by attempting below given question answers.
In this List we have included all Punjab boards and both Arts and Science students. These Boards students can prepare their exam easily with these short question answer section
Lahore Board 10th classes short questions Answer
Rawalpindi Board 10th classes short questions Answer
Gujranwala Board 10th classes short questions Answer
Multan Board 10th classes short questions Answer
Sargodha Board 10th classes short questions Answer
Faisalabad Board 10th classes short questions Answer
Sahiwal Board 10th classes short questions Answer
DG Khan Board 10th classes short questions Answer
Bahwalpur Board 10th classes short questions Answer
All above mention Punjab Boards students prepare their annual and classes test from these online test and Short question answer series. In coming days we have many other plans to provide all kinds of other preparation on our Gotest website.
How to Prepare Punjab Board Classes Short Question Answer at Gotest
- Just Open the desired Class and subject which you want to prepare.
- You have Green bars which are Questions of that subject Chapter. Just click on Bar, it slides down and you can get the right answer to those questions.
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Now you can start your preparation here below
10th Class Physics Chapter 2 Sound Short Question Answer
The number of vibration s per cycle of a vibrating body none second is called frequency.
Ultrasonic waves carry more energy and short wavelength therefore ultrasonic waves are used to diagnose and treat different ailments.
i. Characteristics of sound by which we can distinguish between loud and faint Sounds is called loudness.
ii. It is not physical quantity.
Distance between two consecutive compressions or rarefactions is called the wavelengths of sound wave.
the chest piece consists of a plastic disc called diaphragm in stethoscope.
“Loudness is the characteristics of sound by which loud and faint sounds cab be distinguished”. Loudness depends upon a number of factors. Such as.
i. Amplitude of the vibrating body
ii. Araa of the vibrating body
iii. Distance from the vibrating body
iv. Physical condition of ear.
It depends upon the frequency. A higher pitch means higher frequency and vice versa.
Noise is a nuisance because it causes offence annoyance, trouble or injury.
The echo is formed through reflection but the reflection does not form echo. All sounds reflect back but it is not necessary that all reflections produce echo.
The distance covered in unit time is called speed.
Sound waves are called mechanical waves because they require material medium for their propagation.
Frequency: The number of vibration completed in one second is called frequency. Its unit is hertz.(Hz)
Sounds which are pleasant to our ears are called musical sounds. e.g. sounds of guitar and violin.
The range of the frequencies which a human ear can hear is called the audible frequency range.
Sound energy passing per second through a unit area held perpendicular to the direction of propagation of sound waves is called intensity of sound.
SONAR is “sound navigation and ranging”. It is a technique used to estimate the distance of object from the ocean surface.
The frequency of the voice of ladies is higher than that of men. Therefore, the voice of ladies is shrill and of high pitch.
When sound is incident on the surface of a medium it bounces back into the first medium, thisphenomenon is called echo or reflection of sound.
Transportation equipment, heavy machinery, loud vehicles horns and alarms are the source of noise pollution.
By using an”Oscilloscope” we can see sound waves.
The property of sound by which we can distinguish between two sounds of same loudness and pitch is called quality.