CBSE Questions for Class 11 Engineering Physics Physical World Quiz 9 - MCQExams.com

Newtonian mechanics could not explain
  • fall of bodies on earth
  • Some of the most basic features of atomic phenomena
  • moment of planets
  • flight of rockets
Being in perpetual contact with a wide range of people mainly because of mobile phones which can be close to body all time this means
  • We have no access to people
  • We are not interact with people easily
  • We can gain access to people and information at great speed
  • And it means it has generated a response in the fast movement
The following are some great discoveries in Physics
$$1$$. X-rays
$$2$$. Theory of Relativity
$$3$$. Super conductivity
$$4$$. Raman effect
The chronological order in which they were discovered is?
  • $$1, 2, 4, 3$$
  • $$1, 3, 2, 4$$
  • $$1, 2, 3, 4$$
  • $$4, 1, 2, 3$$
Choose the correct answer form the alternatives given.
A bundle of energy is known as:
  • Photon
  • Quantum
  • Nuclear
  • Uranium
Consider the motion of a particle under the influence of a central force. Choose the incorrect statements.
  • The motion of the particle is confined to a plane
  • The position vector of the particle with respect to the center of the force has a constant areal velocity
  • Angular momentum of the particle with respect with respect to the center force is a constant vector
  • Linear momentum of the particle must vary periodically with time.
Research is the manipulation of things, is said by
  • Slesinger and Stephenson
  • F. A. Ogg
  • Slesinger
  • Stephenson
Which of the following statements is incorrect ?
  • Nuclear force are always attractive
  • Nuclear force are stronger than coulombian force at distance of picometer
  • Nuclear force are repulsive at distance less than or equal to $$0.8$$ picometer
  • Nuclear force are spin dependent
Which of the following is not basic conservation law in physics?
  • Conservation of mechanical energy
  • Conservation of momentm
  • Conservation of charge
  • Conservation of energy
According to sociologists aircraft was invented in
  • 1901
  • 1905
  • 1903
  • 1906
Scientific method has following steps.
  • observation solution theory
  • Problem observation hypothesis data experiment conclusion
  • Problem hypothesis observation conclusion
  • None of these
What term is used to describe tha phenomenon whereby newspapers can be read online radio stations accessed on digital televisions and mobile phones enable internet access?
  • mediatization
  • convergence
  • globalization
  • cloud computing
Scientific observations are based on.
  • controlled conditions
  • precision
  • organization of the data
  • all of the above
Which of the following would be an example of a random sample?A researcher.
  • administers a questionnaire to every fifth woman who enters a business office
  • examines the attitudes of residents of a city by interviewing every twentieth name in the city's telephone book
  • studies the attitudes of Democratic voters by choosing every tenth name found on a city's list of registered Democrats
  • None of the above
Column IColumn II
(A) Johannes Kepler(1) Nuclear model of the atom
(B) Tycho Brabe(2) Planetary motion
(C) Nicolas Copernicus(3) Elliptical orbital theory
(D) Ernest Rutherford(4) Circular orbit theory
Math the column I and Column II
  • (A) - (2), (B) - (4), C -(3), (D) - (1)
  • (A) - (1), (B) - (2), C -(3), (D) - (4)
  • (A) - (2), (B) - (1), C -(4), (D) - (3)
  • (A) - (3), (B) - (2), C -(4), (D) - (1)
Ethnographic research produces qualitative data because.
  • the findings are amenable to statistical analysis
  • it is conducted over a period of several years
  • ti uncovers rich detailed accounts from an insider's perspective
  • it compares findings from a number of different cases
Karl Marx explained the process of class struggle with the help of which one of the following theories?
  • Empirical Liberalism
  • Existentialism
  • Darwin's Theory of Evolution
  • Dialectical Materialism
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