NCERT Physical World Class 11 MCQs Questions with Answers

Chapter - 1 

Physical World Class 11 MCQs Questions with Answers

Question 1.
The word Science originates from the Latin verb Scientia meaning
(a) to know
(b) to see
(c) to experience
(d) to observe

Answer

Answer

Answer: (a) to know

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Question 2.
Atomic and molecular phenomena are dealt with by
(a) Newtonian Mechanics
(b) fluid Mechanics
(c) applied Mechanics
(d) Quantum Mechanics

Answer

Answer: (d) Quantum Mechanics

Answer

Answer: (d) Quantum Mechanics

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Question 3.
Wave picture of light failed to explain.
(a) the photoelectric effect
(b) polarization of light
(c) diffraction of light
(d) interference of light

Answer

Answer: (a) the photoelectric effect

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Question 4.
Heliocentric theory proposed by Nicolas Copernicus was
(a) replaced by circular orbits to fit the data better
(b) replaced by elliptical orbits to fit the data better
(c) replaced by elliptical orbits to fit the taste of new rulers of Italy
(d) replaced by parabolic orbits to fit the data better

Answer

Answer

Answer: (b) replaced by elliptical orbits to fit the data better

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Question 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?
(a) Davisson and Germer Experiment
(b) experimental discovery of positron
(c) scattering of alpha particle or the gold foil experiment
(d) Michelson Morley experiment

Answer

Answer

Answer: (b) experimental discovery of positron

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Question 6.
The scientific method is
(a) a prescribed method for investigating phenomena, acquiring new knowledge…
(b) A procedure for proposing new hypothesis
(c) a body of techniques for investigating phenomena, acquiring new knowledge…
(d) A method for proposing new theories.

Answer

Answer

Answer: (c) a body of techniques for investigating phenomena, acquiring new knowledge…

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Question 7.
A scientific theory
(a) cannot be changed but can be reformulated
(b) is fixed once and for all because it is logical
(c) is changed to suit new fashion among scientists
(d) can be revised if required to fit new phenomenon or data

Answer

Answer

Answer: (d) can be revised if required to fit new phenomenon or data

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Question 8.
Which of the following is a possible first step in applying the scientific method
(a) Conducting tests
(b) Formulating a hypothesis
(c) Formulation of a question
(d) Building a theory

Answer

Answer

Answer: (c) Formulation of a question

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Question 9.
Which of the following is a possible final step in applying the scientific method
(a) Formulating a hypothesis
(b) Building a theory
(c) Analysis of test results
(d) Formulation of a question

Answer

Answer

Answer: (c) Analysis of test results

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Question 10.
Physics is a
(a) Applied Science
(b) Mathematical Science
(c) Engineering Science
(d) Natural Science

Answer

Answer

Answer: (d) Natural Science

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Question 11.
Newtonian mechanics could not explain
(a) fall of bodies on earth
(b) Some of the most basic features of atomic phenomena.
(c) movement of planets
(d) flight of rockets

Answer

Answer

Answer: (b) Some of the most basic features of atomic phenomena

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We hope the given NCERT MCQ Questions for Class 11 Physics Chapter 1 Physical World with Answers helps you a lot.