Now here you can download the Peshawar Board Topper Biology Papers SSC 2019 Biology complete in the pdf format. A papers of Peshawar board topper are available you can get all these paper free of cost. Just click on the below download button and ultimately you will get the past papers in a pdf file folder free of cost.
A Normal human ear can hear sound whose frequency lies between 20 and 20,000 Hz. If the density of sound is below 20 Hz are above 20000 Hz, then the human ear cannot hear it. Waves frequency below 20 hard are now as infrasonic waves are the sound waves frequency 20000 Hz or called Ultrasonic waves the means about our beyond sound.
The Ultrasonic waves can be produced by an object can see a vibration is higher than 20000 Hz and ultrasonic wave is a pressure wave. which has an extremely short wavelength because of its high frequency and batch and an ultrasonic wave of frequency 25 billion Hz has a wavelength of which is smaller than the wavelength of visible light able to the wavelength of X rays.
We hope you that you are preparing for the board exams very well. The board exams are going to held next month. It is very necessary for students to use the Peshawar topper paper. All papers of board topper of BISE Peshawar are made available for the help of students.
| Subject | Topper | File Size | Download |
|---|---|---|---|
| Biology | 1 | 13.57 MB | Click Here |
| Biology | 2 | 11.93 MB | Click Here |
| Biology | 3 | 18.12 MB | Click Here |
| Biology | 4 | 19.16 MB | Click Here |
| Biology | 5 | 16.48 MB | Click Here |
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