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SAI INTERNATIONAL SCHOOL

                                                       PHYSICS


                                                       CLASS IX

                                                  Chapter:SOUND


                                            HOME ASSIGNMENT-25

               OBJECTIVE

               MCQ (BOARD)


               1. Read the assertion and reason carefully to mark the correct option out of the options

               given below:

               Assertion: Sound needs a material medium to travel.


               Reason: Sound is a transverse wave.

               a.  Assertion is true but reason is false.


               b.  The assertion and reason both are false.

               c.  Both assertion and reason are true, and the reason is the correct explanation of

                  the assertion.

               d.  Both assertion and reason are  true, but reason is not the correct explanation of

                  the assertion.




               2. Sound wave is unable to travel in


               a.  solids.

               b.  liquids.


               c.  gases.

               d.  vacuum.


               3. The nature of sound wave produced by a guitar is


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