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Physical World Test - 26

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Physical World Test - 26
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  • Question 1
    1 / -0
    The given table shows the rank of three different minerals on the scale of hardness.
    MineralRank of hardness
    X$$5$$
    Y$$3$$
    Z$$8$$
    Based on the data, which of the following results of scratch test will be obtained?
    Solution
    Hard objects make scratch marks on soft objects. In the given table showing hardness rank of minerals. X, Y and Z, Z is harder than X and Y so, it can make scratch marks on X and Y. X is harder than Y so, it can make scratch marks on Y.
  • Question 2
    1 / -0
    'Analytical Engine ' was invented by
    Solution

  • Question 3
    1 / -0
    He introduced a triatomic theory of colour vision, was the first to observe ocular astigmatism, he proved that the accommodation of eye was affected by change of curvature of the crystalline lens, but most famour for his discovery of interference of light and for developing the wave theory of light. Who was this physician-cum-physicist?
    Solution
    The triatomic theory of colour vision. The interference of light and for developing the wave theory of light. The physician -cum-physicist was Thomas Young.
  • Question 4
    1 / -0
    In which of the following process a software is used to create a mathematical model of some physical object as shown in the image?

    Solution
    $$\begin{array}{l} 3 D \text { modelling is the process of developlng a mathematical } \\\text { representation of any surface of an object in three } \\\text { dimensions via specialized software. }\end{array} $$
  • Question 5
    1 / -0
    Law of gravity, law of magnetic force are examples of _____.
  • Question 6
    1 / -0
    Who in $$1939$$ suggested the name meson for middle-weight particles?
    Solution
    In $$1939$$, Homi Jehangir Bhabha suggested the name meson for middle weight particles.
  • Question 7
    1 / -0
    The first husband-wife team to get the Nobel Prize for Physics was.
    Solution
    The first husband - wife to get the Nobel prize for Physics was PIERRE-CURIE and MARIE CURIE in $$1903$$ and they shared prize with Antonie Henri Becquerel for their joint research.
  • Question 8
    1 / -0
    Name the latest theory of fundamental physics in which the basic entity is a one-dimensional object as against the 'zero-dimensional' points representing the elementary particles.
    Solution
    In String theory, the basic entity is a one dimensional object.
  • Question 9
    1 / -0
    Inverse square law of distance is followed by the
    Solution
    Both gravitational and electromagnetic forces follow inverse square law of distance.
  • Question 10
    1 / -0
    Physics is sometimes referred to as exact science. Because.
    Solution
    More importance is given to measurement of quantities, i.e., qualitative analysis. 
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