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SAI INTERNATIONAL SCHOOL
                                                         Class 8
                                                  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, wave speed 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. Hz
                           c. 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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