JEE Main & Advanced Physics NLM, Friction, Circular Motion Question Bank

done Third Law of Motion Total Questions - 24

• question_answer1)
  Swimming is possible on account of    [AFMC 1998, 2003]
  A)
  First law of motion             done clear
  B)
  Second law of motion           done clear
  C)
                Third law of motion             done clear
  D)
  Newton's law of gravitation done clear
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• question_answer2)
  When we jump out of a boat standing in water it moves
  A)
  Forward           done clear
  B)
                Backward             done clear
  C)
  Sideways             done clear
  D)
    None of the above done clear
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• question_answer3)
  You are on a frictionless horizontal plane. How can you get off if no horizontal force is exerted by pushing against the surface
  A)
       By jumping             done clear
  B)
  By spitting or sneezing             done clear
  C)
  By rolling your body on the surface             done clear
  D)
  By running on the plane done clear
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• question_answer4)
  On a stationary sail-boat, air is blown at the sails from a fan attached to the boat. The boat will
  A)
  Remain stationary             done clear
  B)
  Spin around             done clear
  C)
  Move in a direction opposite to that in which air is blown             done clear
  D)
  Move in the direction in which the air is blown done clear
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• question_answer5)
  A man is at rest in the middle of a pond on perfectly smooth ice. He can get himself to the shore by making use of Newton's                                  [CPMT 1981]
  A)
       First law             done clear
  B)
    Second law             done clear
  C)
  Third law             done clear
  D)
    All the laws done clear
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• question_answer6)
  A cannon after firing recoils due to                  [EAMCET 1980]
  A)
       Conservation of energy             done clear
  B)
  Backward thrust of gases produced             done clear
  C)
  Newton's third law of motion             done clear
  D)
  Newton's first law of motion done clear
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• question_answer7)
  A body floats in a liquid contained in a beaker. If the whole system as shown in figure falls freely under gravity, then the upthrust on the body due to liquid is  [Manipal MEE 1995]               
  A)
  Zero             done clear
  B)
  Equal to the weight of liquid displaced             done clear
  C)
  Equal to the weight of the body in air             done clear
  D)
  None of these done clear
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• question_answer8)
  Newton's third law of motion leads to the law of conservation of                                 [Manipal MEE 1995]
  A)
                   Angular momentum                 done clear
  B)
              Energy             done clear
  C)
              Mass                done clear
  D)
              Momentum             done clear
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• question_answer9)
  A man is carrying a block of a certain substance (of density 1000 \[kg{{m}^{-3}}\]) weighing 1 kg in his left hand and a bucket filled with water and weighing 10 kg in his right hand. He drops the block into the bucket. How much load does he carry in his right hand now                                   [Manipal MEE 1995]
  A)
  9 kg                  done clear
  B)
    10 kg             done clear
  C)
  11 kg             done clear
  D)
  12 kg done clear
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• question_answer10)
  A man is standing on a balance and his weight is measured. If he takes a step in the left side, then weight            [AFMC 1996]
  A)
  Will decrease             done clear
  B)
    Will increase             done clear
  C)
  Remains same             done clear
  D)
    First decreases then increases done clear
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• question_answer11)
  A man is standing at a spring platform. Reading of spring balance is 60 kg wt. If man jumps outside platform, then reading of spring balance         [AFMC 1996; AIIMS 2000; Pb. PET 2000]            
  A)
              First increases then decreases to zero             done clear
  B)
              Decreases             done clear
  C)
              Increases             done clear
  D)
              Remains same done clear
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• question_answer12)
  A cold soft drink is kept on the balance. When the cap is open, then the weight                      [AFMC 1996]
  A)
              Increases             done clear
  B)
                Decreases             done clear
  C)
              First increases then decreases             done clear
  D)
              Remains same done clear
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• question_answer13)
  Action and reaction forces act on
  A)
              The same body             done clear
  B)
                The different bodies             done clear
  C)
              The horizontal surface             done clear
  D)
              Nothing can be said done clear
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• question_answer14)
  A bird is sitting in a large closed cage which is placed on a spring balance. It records a weight of 25 N. The bird (mass m = 0.5 kg) flies upward in the cage with an acceleration of \[2\,m/{{s}^{2}}\]. The spring balance will now record a weight of [MP PMT 1999]            
  A)
              24 N                done clear
  B)
              25 N              done clear
  C)
              26 N                done clear
  D)
              27 N done clear
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• question_answer15)
  A light spring balance hangs from the hook of the other light spring balance and a block of mass M kg hangs from the former one. Then the true statement about the scale reading is [AIEEE 2003]            
  A)
              Both the scales read M/2 kg each             done clear
  B)
              Both the scales read M kg each                     done clear
  C)
              The scale of the lower one reads M kg and of the upper one zero             done clear
  D)
              The reading of the two scales can be anything but the sum of the reading will be M kg done clear
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• question_answer16)
  A machine gun fires 20 bullets per second into a target. Each bullet weighs 150 gms and has a speed of 800 m/sec. Find the force necessary to hold the gun in position [EAMCET 1994]            
  A)
              800 N            done clear
  B)
              1000 N             done clear
  C)
              1200 N             done clear
  D)
                2400 N           done clear
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• question_answer17)
  The tension in the spring is                  [AMU (Engg.) 2001]
  A)
  Zero     done clear
  B)
  \[2.5\,N\] done clear
  C)
  \[5\,N\]            done clear
  D)
  \[10\,N\] done clear
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• question_answer18)
  A book is lying on the table. What is the angle between the action of the book on the table and the reaction of the table on the book                     [Kerala PMT 2005]
  A)
  \[0{}^\circ \]  done clear
  B)
  \[30{}^\circ \] done clear
  C)
  \[45{}^\circ \]            done clear
  D)
  \[180{}^\circ \] done clear
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• question_answer19)
  When a horse pulls a wagon, the force that causes the horse to move forward is the force      [Pb. PET 2004]
  A)
  The ground exerts on it            done clear
  B)
  It exerts on the ground done clear
  C)
  The wagon exerts on it done clear
  D)
  It exerts on the wagon done clear
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• question_answer20)
  A student attempts to pull himself up by tugging on his hair. He will not succeed                    [KCET 2005]
  A)
  As the force exerted is small done clear
  B)
  The frictional force while gripping, is small. done clear
  C)
  Newton's law of inertia is not applicable to living beings. done clear
  D)
  As the force applied is internal to the system. done clear
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• question_answer21)
  A man is standing at the centre of frictionless pond of ice. How can he get himself to the shore          [J&K CET 2005]            
  A)
  By throwing his shirt in vertically upward direction             done clear
  B)
  By spitting horizontally             done clear
  C)
              He will wait for the ice to melt in pond             done clear
  D)
              Unable to get at the shore done clear
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• question_answer22)
  A body of mass 5kg is suspended by a spring balance on an inclined plane as shown in figure. The spring balance measure
  A)
  50 N    done clear
  B)
  25 N done clear
  C)
  500 N done clear
  D)
  10 N done clear
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• question_answer23)
  A lift is going up. The total mass of the lift and the passenger is 1500 kg. The variation in the speed of the lift is as given in the graph. The tension in the rope pulling the lift at t  = 11th sec will be
  A)
              17400 N             done clear
  B)
              14700 N             done clear
  C)
            12000 N           done clear
  D)
              Zero done clear
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• question_answer24)
  In the above ques., the height to which the lift takes the passenger is
  A)
              3.6 meters           done clear
  B)
                8 meters             done clear
  C)
              1.8 meters             done clear
  D)
                36 meters             done clear
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