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Chapter 1 physical world :
Physical World NEET MCQs

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1. Origin of the word 'Science' is from
(1) French word 'Scientia'
(2) Greek word 'Scientia'
(3) Latin word 'Scientia', which means 'scientific'
(4) Latin word 'Scientia', which means 'to know'


2. Scientific method involves
(1) Systematic observations, controlled experiments, qualitative and quantitative reasoning, mathematical
modelling and prediction

(2) Systematic observations, controlled experiments, qualitative and quantitative reasoning and mathematical
modelling

(3) Systematic observations, controlled experiments, qualitative and quantitative reasoning, mathematical

modelling, prediction and verification
(4) Systematic observations, controlled experiments, qualitative and quantitative reasoning


3. Origin of the word 'Physics' is from
(1) French word 'Fusis'
(2) Latin word 'Fusis'
(3) Greek word 'Fusis', which means 'Nature'
(4) Greek word 'Fusis', which means 'Physical'


4. Main thrust in physics is on
(1) Unification
(2) Reduction
(3) Both (1) & (2)
(4) Experiments


5. Explaining diverse physical phenomena in terms of a few concepts and laws is
(1) Reduction
(2) Unification
(3) Law (4) Fact


6. Deriving the properties of a bigger, more complex system from the properties and interaction of its constituent
simpler parts is
(1) Unification
(2) Reduction
(3) Law
(4) Fact


7. Logical possibility that an assertion, hypothesis or a theory can be contradicted by an observation or the
outcome of a physical experiment is
(1) Law
(2) Hypothesis
(3) Fact
(4) Falsifiability


8. Which of the following statements is/are correct?
(1) Universal law of gravitation is an assumption or hypothesis
(2) Universal law of gravitation can be proved
(3) Universal law of gravitation can be verified
(4) Both (1) & (3)


9. A theory proposed to explain observed phenomena is
(1) Postulate
(2) Hypothesis
(3) Law
(4) Model


10. A truth, which is self-evident is a/an
(1) Axiom
(2) Postulate
(3) Either (1) or (2) 
(4) Hypothesis


11. "Science is not just a collection of laws, a catalogue of unrelated facts. It is a creation of human mind, with its freely invented ideas and concepts." Who made these remarks?
(1) Newton
(2) Maxwell
(3) Einstein
(4) Raman


12. "The most incomprehensible thing about the world is that it is incomprehensible." Who made these remarks?
(1) Newton
(2) Maxwell
(3) Einstein
(4) Raman


13. "We know very little and yet it is astonishing that we know so much, and still more astonishing that so little
knowledge (or science) can give us so much power." Who made these remarks?
(1) Newton
(2) Maxwell
(3) Einstein
(4) Bertrand Russel


14. "I do not know what I may appear to the world, I seem to have been only like a boy playing on the sea-shore and diverting myself every now and then finding a smoother pebble or a prettier shell than ordinary, while the great ocean of truth lay undiscovered before me." Who said this?
(1) Newton
(2) Maxwell
(3) Einstein
(4) Raman
Sol. Answer (1)


15. A thought experiment in Physics is one which is
(1) Theoretically possible but experimentally not feasible
(2) Neither theoretically possible nor experimentally feasible
(3) Performed by a non-physicist
(4) Performed by a chemist


16. In ‘Mesoscopic Physics’, we deal with
(1) Phenomena at laboratory
(2) Molecular phenomena
(3) Nuclear phenomena
(4) Few tens or hundreds of atom


17 "Classical Physics" deals with
(1) Macroscopic phenomena
(2) Mesoscopic phenomena
(3) Microscopic phenomena
(4) Sometimes mesoscopic sometimes microscopic



18. Strategy of approximation involves
(1) All the complexities of a phenomena
(2) Extracting essential features of a phenomena from its less significant aspects
(3) Qualitative thinking
(4) Both (1) & (3)


19. An Indian scientist who won Nobel Prize for Physics is
(1) Sir J.C. Bose
(2) H.J. Bhaba
(3) M.N. Saha
(4) Sir. C.V. Raman



20. Which of the following statements is not true?
(1) Solar cells may be future source of power for cars
(2) Development in medicine may increase average life expectancy
(3) X-rays were discovered by Roentgen
(4) Radioactivity was discovered by Madam Curie


21. Albert Einstein was awarded Nobel Prize for his work on
(1) Special theory of relativity
(2) General theory of relativity
(3) Photoelectric effect
(4) Mass-energy equivalence


22. It has been postulated that there may be some particle moving with speed greater than the speed of light.Such particles have been named as
(1) Mesons
(2) Pions
(3) Tachyons
(4) Leptons


23. The scientific principle involved in LASER is
(1) Newton's laws of motion
(2) Faraday's laws of induction
(3) Coulomb's laws of induction
(4) Amplification by population inversion



24. Choose the correct statement.
(1) C.V. Raman is associated with scattering of light by the molecules
(2) Neil Bohr is associated with scattering of light by the molecules
(3) S. Chandrashekhar is associated with scattering of light by the molecules
(4) Heisenberg is associated with radioactivity


25. Choose the correct statement.
(1) F. Caree is associated with refrigerator
(2) H. Hertz is associated with electromagnetic waves
(3) James Chadwick is associated with the discovery of neutron
(4) All of these



26. Choose the correct statement.
(1) Scientific principle involved in refrigerator is laws of thermodynamics
(2) Scientific principle involved in steam engine is laws of thermodynamics
(3) Scientific principle involved in rocket propulsion is Newton's laws of motion
(4) All of these



27. Choose the correct statement.
(1) Newton unified celestial and terrestrial mechanics
(2) Maxwell verified experimentally the predictions of the theory of 'electroweak force'
(3) Glashow showed that electricity and magnetism are inseparable aspects of 'electromagnetism'
(4) Rubia unified celestial and terrestrial mechanics



28. Choose the correct statement.
(1) Law of conservation of linear momentum is valid in the presence of an external force also

(2) For angular momentum of a system to remain constant, it is not necessary that external torque acting
on it be zero

(3) Charge can be created and destroyed

(4) A conservation law cannot be proved



29. Choose the correct statement.
(1) Symmetry of nature w.r.t. translation in time is equivalent to law of conservation of energy
(2) Symmetry of nature w.r.t. translation in space is equivalent to law of conservation of linear momentum
(3) Isotropy of space is equivalent to law of conservation of angular momentum
(4) All of these



30. Choose the correct statement.
(1) Range of strong nuclear force is  10–15 m
(2) Range of weak nuclear force is  10–16 m
(3) Gravitational and electromagnetic force have infinite range
(4) All of these



31. Choose the correct statement.
(1) Strong nuclear force is mediated by the particle '-meson'
(2) Weak nuclear force is mediated by the particle 'Boson'
(3) Electromagnetic force is mediated by the particle 'photon' and gravitational force is mediated by the particle
'graviton'
(4) All of these



32. Choose the correct statement.
(1) Gravitational force is conservative
(2) Electromagnetic force is conservative
(3) Nuclear force is non-conservative
(4) All of these



33. Choose the correct statement.
(1) Gravitational force is a central force
(2) Electromagnetic force is a central force
(3) Nuclear force is a non-central force
(4) All of these



34. Choose the correct statement.
(1) Gravitational force is not affected by intervening medium
(2) Electromagnetic force is affected by intervening medium
(3) Nuclear force does not obey inverse square law
(4) All of these



35. Choose the correct statement.
(1) Hans Lippershey is associated with the discovery of telescope
(2) Kepler is associated with the discovery of telescope
(3) C.V. Raman is associated with the discovery of telescope
(4) Hubble is associated with the discovery of telescope
Sol. Answer (1)