In this video tutorial we provides how to application Experiment of Torricelli and atmospheric pressure in our real life. we are try to explain easy way as well as possible.It is very important tearm of this chapter 5. I hope it is very helpfull for class 9-10 students. After completing the chapter then we shall look about m c q from this chapter. HABIGANJ ESCHOOL........ a new you tube channel where you shall get lot of videos on science ( physics, chemistry,math and Ict) and which can help you for Bangladesh ssc and HSC board exam.physics students will be very benefited by this bangla tutorial.HABIGANJ ESCHOOL always try to present a easy method to understand in a sort time. Its very helpful for SSC students. SSC and HSC science students are requested to like and then comment your problem. We will give you solution in comment box. FB LINK: https://web.facebook.com/rajendra.das.54584