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
Technology started with
  • A
    invention of steam engine
  • B
    invention of power loom
  • C
    The conversion of natural resources into simple tools
    Correct
  • D
    invention of printing press
2
What is the correct sequence of events technology gives rise to new science or new science gives rise to technology?
  • A
    technology and science are independent
  • B
    technology can give rise to new science only
  • C
    Science can give rise to technology only
  • D
    Both can happen. Science can give rise to technology and technology can give rise to new science
    Correct
3
Technology strives
  • A
    to perfect science
  • B
    to invent better rat traps
  • C
    to fulfill a human need such as faster cooking or sewing etc
    Correct
  • D
    to use science for application
4
One example where technology predates science is
  • A
    Steam engine
    Correct
  • B
    laser surgery
  • C
    Radio
  • D
    TV
5
One example where science predates technology is
  • A
    power loom
  • B
    Radio
    Correct
  • C
    Steam engine
  • D
    printing press
6
The major contribution of C.V. Raman was
  • A
    model of hydrogen atom
  • B
    Inelastic scattering of light by molecules
    Correct
  • C
    Nuclear model of atom
  • D
    Measurement of electronic charge
7
The major contribution of M.N. Saha was
  • A
    in the area Thermal ionization
    Correct
  • B
    Measurement of electronic charge
  • C
    model of hydrogen atom
  • D
    Nuclear model of atom
8
The major contribution of S.N. Bose was in
  • A
    Measurement of electronic charge
  • B
    relativity theory
  • C
    photoelectric effect
  • D
    Quantum statistics
    Correct
9
Albert Einstein was awarded the Nobel Prize for his work on
  • A
    scattering of light
  • B
    Theory of relativity
  • C
    E = \({\rm{m}}{{\rm{c}}^{\rm{2}}}\)
  • D
    Explanation of photoelectric effect
    Correct
10
The major contribution of Paul Dirac was in
  • A
    photoelectric effect
  • B
    Measurement of electronic charge
  • C
    relativity theory
  • D
    Relativistic theory of electron
    Correct
11
Fundamental forces in nature are those
  • A
    in terms of which all other forces can be explained and derived
    Correct
  • B
    that bind atoms in molecules together
  • C
    Fundamental forces are push, pull and tension forces
  • D
    Fundamental forces are friction, surface tension and viscous forces.
12
Which of these is not a fundamental force?
  • A
    Gravitational Force
  • B
    Electromagnetic Force
  • C
    Frictional force
    Correct
  • D
    Strong Nuclear Force
13
Strong Nuclear Force
  • A
    is responsible for holding the nucleus of an atom together
    Correct
  • B
    is responsible for holding the electrons of an atom together
  • C
    is a long range force
  • D
    is responsible for holding the nucleus of an atom and the electrons
14
Strong Nuclear Force is
  • A
    the strongest of all fundamental forces, about 10 times the gravitational force in strength
  • B
    the strongest of all fundamental forces, about 10 times the electromagnetic force in strength
  • C
    the strongest of all fundamental forces, about 100 times the electromagnetic force in strength
    Correct
  • D
    the strongest of all fundamental forces, about 100 times the gravitational force in strength
15
Strong Nuclear Force has
  • A
    long range compared to gravitational forces
  • B
    short range compared to electromagnetic forces
    Correct
  • C
    long range compared to electrical forces
  • D
    is exerted by electromagnetic fields