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12th Standard Physics Recent Developments in Physics English Medium Free Online Test One Mark questions with Answer Key 2020 - 2021

12th Standard EM

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Physics

Time : 00:10:00 Hrs
Total Marks : 10
    Answer all the questions
    10 x 1 = 10
  1. Which one of the following is the natural nanomaterial

    (a)

    Peacock feather

    (b)

    Peacock beak

    (c)

    Grain of sand

    (d)

    Skin of the Whale

  2. The method of making nanomaterial by assembling the atoms is called

    (a)

    Top down approach

    (b)

    Bottom up approach

    (c)

    Cross down approach

    (d)

    Diagonal approach

  3. The materials used in Robotics are

    (a)

    Aluminium and silver

    (b)

    Silver and gold

    (c)

    Copper and gold

    (d)

    Steel and aluminum

  4. The technology used for stopping the brain from processing pain is

    (a)

    Precision medicine

    (b)

    Wireless brain sensor

    (c)

    Virtual reality

    (d)

    Radiology

  5. The gravitational waves were theoretically proposed by

    (a)

    Conrad Rontgen

    (b)

    Marie Curie

    (c)

    Albert Einstein

    (d)

    Edward Purcell

  6. If the particle of a solid is of size less than 100 nm, it is said to be a ____________

    (a)

    Nano particle

    (b)

    Nano bytes

    (c)

    Nano solid

    (d)

    Nano technology

  7. _______ is synthesized top down approach

    (a)

    Ball milling

    (b)

    Plasma etching

    (c)

    lithography

    (d)

    Ball milling and lithography

  8. George Devol invented the first digitally operated programmable robot called

    (a)

    Unimate

    (b)

    Robotics

    (c)

    Motors

    (d)

    Generators

  9. The size of the Nano robots is reduced to ________ level to perform a task in very small space.

    (a)

    Macroscopic

    (b)

    Robots DNA

    (c)

    Microscopic

    (d)

    Bacteria

  10. In __________ it was established that atoms are made up of electrons, protons and neutrons

    (a)

    1945

    (b)

    1923

    (c)

    1930

    (d)

    1927

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