10th Physics | Chapter 11 | Sound | Solved Exercise Review Questions | Handwritten Notes | part 1

Assalam_o_Alaikum!
I am ZahraAwan.
This lecture is specially recorded for students of #10th_class, 10th class from all #Punjab_Boards and is based on the current curriculum of study for (#ptb) Physics book.
All these lectures are conducted in Urdu/English medium to facilitate Pakistani students.
After watching this video . You will be able to answer the following questions :
11.1 : What is the necessary condition for the production of sound?
11.2 : What is the effect of the medium on the speed of sound? In which medium sound travels more faster: air, solid or liquid? Justify your answer. 00:01:15
11.3 : How can you prove the mechanical nature of sound by a simple experiment? 00:02:35
11.4 : What do you understand by the longitudinal wave? Describe the longitudinal nature of sound waves. 00:04:50
11.5 : Sound is a form of wave. List at least three reasons to support the idea that sound is a wave. 00:08:00
11.6 : We know that waves manifest phenomenon of reflection, refraction and diffraction. Does sound also manifest these characteristics? 00:08:20
11.7 : What is the difference between the loudness and intensity of sound? Derive the relationship between the two.
11.8 : On what factors does the loudness of depend? 00:10:45
11.9 : What do you mean by the term intensity level of sound? Name and define the unit of intensity level of sound. 00:11:10
11.10 : What are the units of loudness? Why do we use logarithmic scale to describe the range of the sound intensities we hear? 00:12:15
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