CBSE Class 11 Physics Physical World Quiz 1

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

A to know B to see C to experience D to observe

2. Atomic and molecular phenomena are dealt with by

A Newtonian Mechanics B fluid Mechanics C applied Mechanics D Quantum Mechanics

3. Wave picture of light failed to explain.

A the photoelectric effect B polarization of light C diffraction of light D interference of light

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

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

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.

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

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 D Building a theory

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

10. Physics is a

A Applied Science B Mathematical Science C Engineering Science D Natural Science