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SAI INTERNATIONAL SCHOOL
                                                          Class8
                                                  Home Assignment
                                                   Subject-Physics
                                                       CH-Friction
                                               Subtopic-Fluid Friction

               INSTRUCTIONS:
                     For Assertion& Reason question follow the following directions.
                       DIRECTION: Each of these questions contains an Assertion followed by Reason. Read them
                       carefully and answer the question on the basis of following options. You have to select the one
                       that best describes the two statements.
                       (a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
                       (b) If both Assertion and Reason are correct, but Reason is not the correct explanation of
                       Assertion.
                       (c) If Assertion is correct but Reason is incorrect.
                       (d) If Assertion is incorrect but Reason is correct.
                       (e) If Assertion & Reason both are incorrect.
                   1.    ASSERTION: Streamline shape is given to fast moving objects in fluids.
                         REASON: Streamline shape saves money while constructing the objects.
                   2.    ASSERTION: Viscous fluid offers more drag.
                         REASON: The inter-molecular force of attraction  is stronger.
               Fill in the blanks
                   3.    The backward force experienced by fast moving body in ______ is called fluid          1
                         friction.
                   4.    _________ shape is given to the fast moving bodies to overcome fluid friction.        1
                   5.    As the speed of object________ fluid friction experienced ________.                   1
               MCQ
                   6.    Fluids are ________                                                                   1
                         a)  Gases
                         b)  Liquids
                         c)  Both (a) and (b)
                         d)  Only gases
                   7.    Factors not affecting fluid friction.                                                 1
                         a)  Shape of object
                         b)  Mass of object
                         c)  Speed of object
                         d)  Viscosity of fluid
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