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SAI INTERNATIONAL SCHOOL
                                                        PHYSICS
                                                        CLASS IX
                                    Chapter:WORK, ENERGY AND POWER
               OBJECTIVE

               MCQ (BOARD)
               1. The gravitational potential energy depends on the

               a.  shape on an object.

               b.  height of an object from the zero level.
               c.  velocity of an object.

               d.  length of an object.

               2. Total mechanical energy is the sum of
               a.  kinetic energy and chemical energy.

               b.  kinetic energy and potential energy.

               c.  potential energy and heat energy.
               d.  heat energy and light energy.

               3. A mass of 10 kg is moved from a point to another, but both the points lie on the
               same horizontal plane. So, the work done by the gravitational potential energy is

               a.  zero.
               b.  mgh.

                        1/2
               c.  (mg ) .
               d.  (1/2) mv
                           2.
               4. The energy possessed by an object of mass 8 kg at a height of 5 m above the ground
               is

               a.  352 J.
               b.  392 J.

               c.  420 J.
               d.  412 J.

               5. When a band is stretched from one end and is then released, we find that it regains
               its original length. The capacity for this work done is provided by

               a.  chemical energy
               b.  kinetic energy




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