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SAI INTERNATIONAL SCHOOL
                                                          Class8
                                                  Home Assignment
                                                   Subject-Physics
                                                       CH-Sound
                                        Subtopic-Terms Related to sound

                   1.    Frequency is inversely proportional to ____________.                                  1
                   2.    Distance between two consecutive _________ or ________ is called                      1
                         wavelength.
               True/False
                   3.    As wave length and frequency of sound increases wavespeed increases.                  1
                   4.    SI unit of frequency is m/s.                                                          1
               MCQ
                   5.    What is the approximate speed of sound in air?                                        1

                            a.  110 m/s
                            b.  220 m/s
                            c.  330 m/s
                            d.  440 m/s


                   6.    Calculate the frequency given the time-period is 2 second.                            1
                         a)  0.5 Hz
                         b)  0.1 Hz
                         c)  1 Hz
                         d)  2 Hz
                   7.    Pendulum A makes 24 oscillations in five seconds and pendulum B makes 10  1
                         oscillations in three seconds. Which has a higher frequency? (In hertz).
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