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GK Questions: General Science(Physics) – Set 17

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Sheerin
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Hello Aspirants. Welcome to Online General Knowledge section in Affairs cloud, which is important for all the competitive exams. We have created Some questions related to General Science(Physics) !!

  1. Electrical Potential on Earth is considered to be …………………..
    1.Unity
    2.Zero
    3.Maximum
    4.Minimum
    5.None of these
    Answer – 1.Zero
    Explanation :
    The nature of potential is that the zero point is arbitrary; it can be set like the origin of a coordinate system. That is not to say that it is insignificant; once the zero of potential is set, then every value of potential is measured with respect to that zero.

  2. ………………… is the study of atmosphere
    1.Agrobiology
    2.Aerology
    3.Agrology
    4.Aerobiology
    5.None Of These
    Answer – 2.Aerology
    Explanation :
    The branch of meteorology involving the observation of the atmosphere by means of balloons, airplanes, etc.

  3. Oxygen is …………………….
    1.Ferromagnetic
    2.Magnetic
    3.Paramagnetic
    4.Diamagnetic
    5.None of these
    Answer – 3.Paramagnetic
    Explanation :
    Gaseous oxygen is paramagnetic also but is moving too fast to be affected by the magnets. The reason that it is paramagnetic is because the oxygen molecule has two unpaired electrons

  4. Mass energy relation is given by
    1.Peter W Higgs
    2.Galileo
    3.Newton
    4.Albert-Einstein
    5.None of these
    Answer – 4.Albert-Einstein
    Explanation :
    Albert Einstein’s mass-energy equation E=mc2

  5. …………………. is a unit of  Magnetic Flux
    1.Kelvin
    2.Fermi
    3.Weber
    4.Radian
    5.None of these
    Answer – 3.Weber
    Explanation :
    In physics, the weber is the SI unit of magnetic flux. A flux density of one Wb/m2 is one tesla.

  6. The light reflected from Moon takes …………….. to reach Earth
    1.1.5s
    2.3s
    3.8s
    4.1.28s
    5.None of these
    Answer – 4.1.28s
    Explanation :
    Light takes 1.28 s to travel from the moon to Earth

  7. Cooking Utensils are made of aluminium, brass and steel because these substance have …………………………….. and ………………..
    1.Low specific heat and low conductivity
    2.High specific heat and high conductivity
    3.Low specific heat and high conductivity
    4.High specific heat and low conductivity
    5.None of these
    Answer – 3.Low specific heat and high conductivity
    Explanation :
    Cooking utensils are made of aluminium brass and steel because these substance have low specific heat and high conductivity

  8. Size of image is always ……………. to size of object
    1.Equal
    2.Greater
    3.Smaller
    4.Depend Upon the distance
    5.None of these
    Answer – 1.Equal
    Explanation :
    The image distance always equals the object distance. The size of the image is the same as the object (the mirror does not magnify)

  9. When Kerosene oil is sprinkled on water, its surface tension
    1.Increases
    2.Decreases
    3.Either Increases or Decreases
    4.Constant
    5.None of these
    Answer – 2.Decreases
    Explanation :
    If Kerosene oil is sprinkled on water, its surface tension lowered

  10. If mach number greater than 1 then the body is called as
    1.Supersonic
    2.Hypersonic
    3.Subsonic
    4.All of these
    5.None of these
    Answer – 1.Supersonic
    Explanation :
    If mach number greater than 1 then the body is called as Supersonic. Aircraft designed to fly at supersonic speeds show large differences in there aerodynamic design because of the radical differences in the behaviour of flows above Mach 1.





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