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Physical World Test - 31

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Physical World Test - 31
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Weekly Quiz Competition
  • Question 1
    1 / -0
    J.C. Bose , Prafulla Chandra Ray, and D.N. Malik taught which scientist ? 
    Solution

  • Question 2
    1 / -0
    Who established National Academy of Science ?
    Solution

  • Question 3
    1 / -0
    The knowledge of Astrophysics is given by: 
    Solution

  • Question 4
    1 / -0
    Siddhanta Siromani is written by:
    Solution

  • Question 5
    1 / -0
    What is the meaning of the term 'alien' ?
    Solution
    In law, an alien is a person who is not a citizen or national of a given country, though definitions and terminology differ to some degree depending on the continent or region of the world. in short we can say 'alien' term is used for extra terrestrial life. 
  • Question 6
    1 / -0
    Physics is a
    Solution
    Physics is study of natural phenomena and describing them, so it's natural science.
  • Question 7
    1 / -0
    Atomic and molecular phenomena are dealt with by
    Solution
    Newtonian mechanics deals with application of Newton's laws and the motion of bodies under the influence of forces.
    Fluid mechanics deals with mechanics of fluids at rest and motion.
    Applies physics deals with various forces and their applications to engineering problems.
    And quantum mechanics is physics at atomic and subatomic level, it deals with atomic and molecular phenomena.
  • Question 8
    1 / -0
    Which of the following is a possible first step in applying the scientific method
    Solution
    Steps in applying scientific method are : - formulating a question, do research, formulation a hypothesis, conduct experiments to prove hypothesis, make observations, analyze result and draw conclusion.
    So the first step is formulating a question.
  • Question 9
    1 / -0
    Newtonian mechanics could not explain
    Solution
    Newtonian mechanics could explain fall of bodies using equations of motion,
    Movement of planets using Kepler's law which are derived from Newtonian mechanics.
    Flight of rockets can be explained using Newton's third law.
    But Newtonian mechanics fails to explain even basic features of atomic phenomena
  • Question 10
    1 / -0
    Consider the motion of a particle under the influence of a central force. Choose the incorrect statements.
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