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Physical World Test - 27

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Physical World Test - 27
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Pick out the correct statement about the strong nuclear force from the following.
    $$S1$$ : It is charge independent.
    $$S2$$ : It is the strongest force in nature.
    $$S3$$ : Its range is very large.
    $$S4$$ : It is responsible for the stability of nuclei.
    Solution
    its charge is independent.
    it is responsible for the stability of nuclei
    The range of strong nuclear force is very small, of about nuclear dimensions $$(10^{-15}m)$$.
  • Question 2
    1 / -0
    Who was the first woman to fly in space?
    Solution
    Valentina Vladimirovna Tereshkova is a retired Soviet cosmonaut and the first woman to have flown in space, having been selected from more than four hundred applicants and five finalists to pilot Vostok 6 on 16 June 1963.
  • Question 3
    1 / -0
    Which of the following does not depict the correct link between technology and physics. ?
    Solution

    $$\textbf{Solving by analyzing the options}$$

    Option $$B$$:  Rocket propulsion is based on Newton's law of motion and not on the laws of thermodynamics.

    Therefore, statement B is saying the incorrect link between technology and physics.

    Hence option B is correct.

    Whereas rest three options has correct link as explained below:

    • Photocells are based on the Photoelectric effect of light.
    • Optical fibers are based on the important property of light which is a total internal reflection of light.
    • The fusion test reactor is functioning with magnetic confinement of the plasma. The fusion test reactor was a popular experiment related to magnetic plasma.


  • Question 4
    1 / -0
    Why does the police used dogs for detective work?
    Solution
    Dog's eyesight,smelling power and hearing capability is very good. It can even listen the ultrasonic waves. So police use dog for detective work.
  • Question 5
    1 / -0
    Which of the following statements is incorrect. ?
    Solution
    Neutron was discovered by James Chadwick and electron was discovered by J.J.Thomson.
  • Question 6
    1 / -0
    What is the study of the modern theory of the strong forces between quarks?
    Solution
    Quantum chromodynamics is as quantum field theory in which strong interaction is described in terms of an interaction between quarks.
  • Question 7
    1 / -0
    Which of the following statements is not correct. ?
    Solution

    Complex technologies are making use of more rarefied physical concepts. Physics describes the things that are possible in the universe, and technology is eventually built to do work within that which has been discovered by physics. This interplay also works in reverse. Modern physicists are frequently making use of extremely high-tech machines and processes. For example, the Large Hadron Collider in Switzerland is the world's largest particle accelerator. It can be operated at higher energies than any previous one. It was built explicitly to perform experiments in particle physics.

    Thus Physics and technology are very much related to each other. So statement B is not appropriate. Although the other three statements are very much correct and factful.

    Thus option B is correct.

  • Question 8
    1 / -0
    Which of the following statements is incorrect?
    Solution
    It is easier to pull lawn mower than to push it. All other statements are true.
  • Question 9
    1 / -0
    Magnetic force is:-
    Solution

  • Question 10
    1 / -0
    Animals make use of $$-----------$$ to carry out their physical activities and other tasks$$.$$
    Solution
    Animals make use of muscular force to carry out their physical activities and other task.
    The correct option is D.
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