Physics

  1. Decibel is a unit of?
    (A) Atmospheric pressure
    (B) Force
    (C) Energy
    (D) Sound;

  2. Who among the following evolved the concept of relationship between mass and energy?
    (A) Einstein
    (B) Planck
    (C) Dalton
    (D) Rutherford

  3. In which form is the largest amount of energy received by the Earth from the Sun?
    (A) X-ray
    (B) Gamma rays
    (C) Infra-red energy
    (D) None of the above
  4. Show Answer (C) Infra-red energy

  5. A steam engine converts heat energy into
    (A) Electrical energy
    (B) Mechanical energy
    (C) Chemical energy
    (D) None of these
  6. Show Answer (B) Mechanical energy

  7. Who was appointed as the new Director-General of International Atomic Energy Agency (IAEA) in December, 2009?
    (A) Mohammed EI Baradei
    (B) Yukiya Amano
    (C) Mark Malloch Brown
    (D) Koichiro Matsuuna
  8. Show Answer (B) Yukiya Amano

  9. The International Atomic Energy Agency (IAEA) was' created under the aegis of the UN in?
    (A) 1945
    (B) 1946
    (C) 1955
    (D) 1957

  10. In an atomic explosion, enormous energy is released which is due to the
    (A) conversion of neutrons into protons
    (B) conversion of chemical energy into heat energy
    (C) conversion of mechanical energy into nuclear energy
    (D) conversion of mass into energy
  11. Show Answer (D) conversion of mass into energy

  12. During a journey from earth to moon and back, the greatest energy required from the spaceship's rocket is to overcome?
    (A) the moon's gravity at lunar landing
    (B) the earth's gravity at take-off
    (C) the moon's gravity at take-off
    (D) the earth's gravity at re-entry into the atmosphere
  13. Show Answer (B) the earth's gravity at take-off

  14. What is the use of radiator in motor car?
    (A) to balance the pressure
    (B) to balance the energy
    (C) to balance the temperature
    (D) None of these
  15. Show Answer (C) to balance the temperature

  16. Capacity of doing work is known as
    (A) Velocity
    (B) Momentum
    (C) Acceleration
    (D) Energy

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