CBSE  /  Class 11  /  Physics  /  Physical World

  • 1. 
    The word Science originates from the Latin verb Scientia meaning

  • to know
  • to see
  • to experience
  • to observe

  • 2. 
    Atomic and molecular phenomena are dealt with by

  • Newtonian Mechanics
  • fluid Mechanics
  • applied Mechanics
  • Quantum Mechanics

  • 3. 
    Wave picture of light failed to explain.

  • the photoelectric effect
  • polarization of light
  • diffraction of light
  • interference of light

  • 4. 
    Heliocentric theory proposed by Nicolas Copernicus was

  • replaced by circular orbits to fit the data better
  • replaced by elliptical orbits to fit the data better
  • replaced by elliptical orbits to fit the taste of new rulers of Italy
  • replaced by parabolic orbits to fit the data better

  • 5. 
    Just as a new experiment may suggest an alternative theoretical model, a theoretical advance may suggest what to look for in some for in some experiments. Which of the following experiments can be considered to support this claim?

  • Davisson and Germer Experiment
  • experimental discovery of positron
  • scattering of alpha particle or the gold foil experiment
  • Michelson Morley experiment

  • 6. 
    The scientific method is

  • a prescribed method for investigating phenomena, acquiring new knowledge…
  • A procedure for proposing new hypothesis
  • a body of techniques for investigating phenomena, acquiring new knowledge…
  • A method for proposing new theories.

  • 7. 
    A scientific theory

  • cannot be changed but can be reformulated
  • is fixed once and for all because it is logical
  • is changed to suit new fashion among scientists
  • can be revised if required to fit new phenomenon or data

  • 8. 
    Which of the following is a possible first step in applying the scientific method

  • Conducting tests
  • Formulating a hypothesis
  • Formulation of a
  • Building a theory

  • 9. 
    Which of the following is a possible final step in applying the scientific method

  • Formulating a hypothesis
  • Building a theory
  • Analysis of test results
  • Formulation of a

  • 10. 
    Physics is a

  • Applied Science
  • Mathematical Science
  • Engineering Science
  • Natural Science
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