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
“Politics is the art of the possible. Similarly, Science is the art of the soluble”. Which of the following statements is a case of this aphorism?
  • A
    A scientist looks for solutions that derive from other unproven hypothesis
  • B
    A scientist looks for solutions that are abstract and unintelligible but elegant
  • C
    A scientist looks for solutions that can are impossible to verify
  • D
    A scientist looks for solutions that can be readily tested, implemented and are practical
    Correct
2
No physicist has ever “seen” an electron. Yet, all physicists believe in the existence of electrons. An intelligent but superstitious man advances this analogy to argue that ‘ghosts’ exist even though no one has seen one. How will you refute his argument ?
  • A
    Existence of electrons can be demonstrated by experiments but existence of ghosts cannot be
    Correct
  • B
    electrons have been discovered by great scientists but no great scientist claimed to find ghosts
  • C
    There is no scientific study of ghosts so they cannot exist
  • D
    science does not deal with ghosts because they don’t exist
3
Which of these were not major technological advances during industrial revolution in England and Europe?
  • A
    The cotton gin
  • B
    Steam engine
  • C
    Satellite communication
    Correct
  • D
    Power loom
4
Which of these was a major scientific major advance during industrial revolution in England and Europe?
  • A
    Development of several machine tools for cutting metal parts.
  • B
    mechanized cotton spinning powered by steam
  • C
    Louie Pasteur's discovery of the link between microbes and illness
    Correct
  • D
    Newcomen steam engine
5
Which of these was a major technological achievement in ancient India?
  • A
    Baudhayana Sulba Sutra, which contains examples of simple Pythagorean triples, as well as a statement of the Pythagorean Theorem for the sides of a square
  • B
    Paṇini's morphological analysis
  • C
    Cataract surgery of physician Sushruta
    Correct
  • D
    Vedanga Jyotiṣa containing details of astronomical calculations, calendrical studies, and established rules for empirical observation
6
Which of these was a major scientific achievement in ancient India?
  • A
    silver and copper coinage
  • B
    416 V 60 Hz
  • C
    Baudhayana Sulba Sutra, which contains examples of simple Pythagorean triples, as well as a statement of the Pythagorean Theorem for the sides of a square
    Correct
  • D
    making different kinds of swords
7
What is the relation between morality and science?
  • A
    Science is immoral
  • B
    Science has proved that morality is impractical
  • C
    Morality is not the subject matter of science
    Correct
  • D
    Morality can be derived from scientific principles
8
In the event of your stumbling upon a discovery, which has great academic interest but is certain to have nothing but dangerous consequences for the human society. How, if at all, will you resolve your dilemma?
  • A
    Tell every Tom Dick and Harry about it
  • B
    Share it with your colleagues only without publicity if there is no way to save human society from dangerous consequences. Look for ways to save the human society along with your colleagues
    Correct
  • C
    Keep it to yourself.
  • D
    Tell the media
9
In the event of your stumbling upon a discovery, which has great academic interest as well as some benefits and some bad consequences for the human society. How, if at all, will you resolve your dilemma?
  • A
    Tell every Tom Dick and Harry about it
  • B
    Leave it to the human society informing them of the good bad and the ugly.
    Correct
  • C
    Keep it to yourself.
  • D
    Tell your colleagues only
10
Good and bad effects of a particular scientific/technological advance such as prenatal sex determination should in general be weighed by
  • A
    well being and welfare of the originators of the advance
  • B
    well being and welfare of the society i.e. whether or not it does good for the human kind
    Correct
  • C
    well being and welfare of the scientists
  • D
    well being and welfare of the rulers
11
Though the law gives women equal status in India, many people hold unscientific views on a woman’s innate nature, capacity and intelligence and in practice give them a secondary status and role. Which of the following do not constitute a valid support of the scientific view?
  • A
    Maitreyi, the woman seer and philosopher
  • B
    Madame Curie’s discovery of radio activity
  • C
    Women’s only role is at home
    Correct
  • D
    Emmy Noether’s discovery of symmetry laws
12
“It is more important to have beauty in the equations of physics than to have them agree with experiments.” The great British physicist P. A. M. Dirac held this view. Which of the following goes against this view?
  • A
    “Beauty lies in the eyes of the beholder” whereas science aims for objectivity
    Correct
  • B
    A beauty appeals to the majority
  • C
    Beauty appeal emotionally
  • D
    A thing of Beauty is a joy forever
13
Science is
  • A
    dependent on the caste of the scientist
  • B
    independent of actual persons and depends only on the truth or falsity of the claims as revealed by experiments
    Correct
  • C
    dependent on the nationality of the scientist
  • D
    dependent on the gender of the scientist
14
Which of these is not a fundamental force?
  • A
    Strong Nuclear Force
  • B
    Electromagnetic Force
  • C
    Spring force
    Correct
  • D
    Weak Nuclear Force
15
Science is
  • A
    Objective
    Correct
  • B
    dependent on the emotions of scientists
  • C
    dependent on feelings of scientists
  • D
    Subjective