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Physical World Test 3

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Physical World Test 3
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Weekly Quiz Competition
  • Question 1
    1 / -0

    Earth pulls every object towards it with a force called:

    Solution

    Gravitational force of the earth acts from the centre of the earth and pulls every substance towards itself.

  • Question 2
    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 3
    1 / -0

    Gravity is:

    Solution

    Gravity acts from the centre of the earth, therefore it is a down ward acting force.

  • Question 4
    1 / -0

     

    The strongest fundamental force in nature is

    Solution

    Force Relative Strength  Electromagnetic force 10−3 Strong nuclear force 1 Weak nuclear force 10−13 Gravitational force 10−40Strongest is the strong nuclear force .

  • Question 5
    1 / -0

    Gravity is defined  as:

    Solution

    Gravitational force of the earth acts from the centre of the earth and pulls every substance towards itself.

  • Question 6
    1 / -0

    Which force is weakest of all fundamental forces?

    Solution

    Gravitational force is the attraction between two masses.

    Electromagnetic force is the force between two charged particles or two poles of a magnet. It is stronger than Gravitational.

    Weak nuclear force is the weak force of attraction between the subatomic particles of the nucleus of an atom. Though the name suggests that it is weak, it is stronger than electromagnetic.

    Strong nuclear force is the stronger version of nuclear force.It is the strongest force in nature.

  • Question 7
    1 / -0

    Earth has no gravitational force:

    Solution

    Gravitational force of the earth acts from the centre of the earth and pulls every substance towards itself.

  • Question 8
    1 / -0

    Wheel-arid-axle and rope move in:

    Solution

    Wheel-arid-axle and rope move in same direction.

  • Question 9
    1 / -0

    Which of these is incorrect about nuclear forces?

    Solution

    Hadrons are subatomic composite porticle made of two(or) more quarks. They experpance strong nuclear force. ​

  • Question 10
    1 / -0

    Which of the following class of forces is different from others?

    Solution

    Spring force is different from magnetic ,electrical and gravitational force as it varies linearly.

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