11th physics laws of motion test paper.

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 By vip sir

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Time : 1: 00 hour. Marks : 35

            

            UNIT - 6  ( MOTION )            

                            LAWS OF MOTION 


OBJECTIVE QUESTIONS :

QUESTION 1. MULTIPLE CHOICE QUESTIONS : ( EACH 1 MARKS) 

  1. The measure of inertia is it - 

  1. Mass             b)  Velocity      c) Both      d) None of these 

     

 2.   If a net force in a body is zero, then it's acceleration - 

  1. Will increase. (b) Will decrease   (c)  Will. Zero   (d)  None of these 

    

3.   If constant force acting upon a body, then which will be among uniform.    

                 a)   Velocity    b) acceleration     c) momentum.       d) energy 

      

4. If a lift falling independently, the weight of the person of 100kg will be. 

  1. 880 joules   b) 980 Newton    c) zero           d) 980 kg

 

 5. 1 Newton is equal to. 

  1. Kg x meter x time  b) Kg x meter / second   c) meter x second d) Kg x second



QUESTION 2. FILL IN THE BLANKS:  ( EACH 1 MARKS) 

  1. Newton's Law of Motion does not apply force ______. 

  2. In nature forces always exist in_______ . 

  3. A moving bullet gets embedded into a wooden block ______ remain conserved. 

  4. Newton's first law of motion is also called law of _____.

  5. The unit of Linear Momentum is________. 



QUESTION 3. Define 1 Newton?                                (2)


QUESTION 4. Define inertia?                                     (2)


QUESTION 5. Action and reaction are equal and opposite to each other but do not cancel each other why ?                     (2)  


QUESTION 6. Define momentum. If two bodies are moving with equal velocities. Then the momentum of heavier body will be more than that of lighter body.                   (3) 


QUESTION 7. What do you understand by impulse? Prove that impulse of the force is equal to change in momentum.        (3) 



QUESTION 8. Write Newton's law of motion and prove that Force = mass x acceleration. (4) 



QUESTION 9. Explain the laws of Conservation of linear momentum? Drive law of Conservation of momentum from Newton's third law of motion.                                           (4)


QUESTION 10.  State the principle of rocket propulsion and drive expansion for velocity and acceleration of the rocket and also for thrust on rocket.                                      (5)                         


Or

 

A man of mass 65 kg is standing on a weighting machine placed in a lift. What will be reading of weighting machine, If the lift is :

  • Asendind with uniform velocity 5 m /s

  • Asending with uniform acceleration 5 m/s2

  • Falling freely under gravity. 

  • Desending with uniform acceleration 5 m/s2.



§§ BEST OF LUCK §§








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