Physical World CBSE Questions & Answers

Physical World

This is Physics Class 11 Physical World CBSE Questions & Answers. There are 15 questions in this test with each question having around four answer choices.

Questions & Answers

1
Physics is a
  • A
    Natural Science
    Correct
  • B
    Mathematical Science
  • C
    Applied Science
  • D
    Engineering Science
2
The word Science originates from the Latin verb Scientia meaning
  • A
    to experience
  • B
    to observe
  • C
    to see
  • D
    to know
    Correct
3
The scientific method is
  • A
    a prescribed method for investigating phenomena, acquiring new knowledge...
  • B
    A procedure for proposing new hypothesis
  • C
    A method for proposing new theories.
  • D
    a body of techniques for investigating phenomena, acquiring new knowledge...
    Correct
4
Which of the following is a possible first step in applying the scientific method
  • A
    Formulating a hypothesis
  • B
    Building a theory
  • C
    Conducting tests
  • D
    Formulation of a question
    Correct
5
Which of the following is a possible final step in applying the scientific method
  • A
    Formulation of a question
  • B
    Analysis of test results
    Correct
  • C
    Formulating a hypothesis
  • D
    Building a theory
6
A scientific theory is accepted if
  • A
    predictions of the theory are confirmed by experiments
    Correct
  • B
    The theory is very simple elegant or very complicated
  • C
    The theory is derivable from other theories logically.
  • D
    The theory is approved by a panel of people after studying the theory only
7
A scientific theory
  • A
    can be revised if required to fit new phenomenon or data
    Correct
  • B
    is changed to suit new fashion among scientists
  • C
    cannot be changed but can be reformulated
  • D
    is fixed once and for all because it is logical
8
Heliocentric theory proposed by Nicolas Copernicus was
  • A
    replaced by elliptical orbits to fit the data better
    Correct
  • B
    replaced by elliptical orbits to fit the taste of new rulers of Italy
  • C
    replaced by circular orbits to fit the data better
  • D
    replaced by parabolic orbits to fit the data better
9
Newtonian mechanics could not explain
  • A
    Some of the most basic features of atomic phenomena.
    Correct
  • B
    movement of planets
  • C
    flight of rockets
  • D
    fall of bodies on earth
10
Wave picture of light failed to explain.
  • A
    the photoelectric effect
    Correct
  • B
    diffraction of light
  • C
    polarization of light
  • D
    interference of light
11
Atomic and molecular phenomena are dealt with by
  • A
    Newtonian Mechanics
  • B
    fluid Mechanics
  • C
    Quantum Mechanics
    Correct
  • D
    applied Mechanics
12
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?
  • A
    experimental discovery of positron
    Correct
  • B
    Michelson Morley experiment
  • C
    scattering of alpha particle or the gold foil experiment
  • D
    Davisson and Germer Experiment
13
In Physics, we attempt to explain
  • A
    diverse physical phenomena in terms of logic
  • B
    diverse physical phenomena in terms of a few concepts and laws
    Correct
  • C
    diverse physical phenomena in terms of a large number of concepts and laws
  • D
    diverse physical phenomena in terms of Einstein’s and Newton’s laws
14
Reductionism is
  • A
    Deriving the properties of a bigger, more complex, system from first principles
  • B
    Deriving the properties of a bigger, more complex, system from the properties and interactions of its constituent simpler parts.
    Correct
  • C
    reducing all phenomena to logical consequences of Newton’s laws
  • D
    reducing all phenomena to logical consequences of Einstein’s laws
15
Classical Physics deals mainly with
  • A
    surface phenomena
  • B
    microscopic phenomena
  • C
    macroscopic phenomena
    Correct
  • D
    transport phenomena