Physics Questions Answers Online Quiz Test

• 1. Who discovered Atom ?

  1. Madam Curie
  2. James Chadwick
  3. Rutherford
  4. John Dalton

• 2. Who discovered Diode Bulb ?

  1. Henry Becquerel
  2. Sir J.S. Fleming
  3. Lee De Forest
  4. Archemedes

• 3. Radiocarbon is produced in the atmosphere as a result of

  1. collision between fast neutrons and nitrogen nuclei present in the atmosphere
  2. action of ultraviolet light from the sun on atmospheric oxygen
  3. action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
  4. lightning discharge in atmosphere

• 4. The absorption of ink by blotting paper involves

  1. capillary action phenomenon
  2. viscosity of ink
  3. siphon action
  4. diffusion of ink through the blotting

• 5. Siphon will fail to work if

  1. both its limbs are of unequal length
  2. the temperature of the liquids in the two vessels are the same
  3. the level of the liquid in the two vessels are at the same height
  4. the densities of the liquid in the two vessels are equal

• 6. Nuclear sizes are expressed in a unit named

  1. Fermi
  2. Angstrom
  3. Newton
  4. Tesla

• 7. Light year is a unit of

  1. Time
  2. Light
  3. Distance
  4. Intensity of light

• 8. Radian is used to measure

  1. Temperature
  2. Intensity of Flame
  3. Angle
  4. Solid Angle

• 9. newton is used to measure

  1. Speed
  2. Volume
  3. Force
  4. Area

• 10. radian per second is unit of

  1. Momentum
  2. Moment of Inertia
  3. Frequency
  4. Angle Velocity

• 11. unit of Pressure is

  1. newton second
  2. pascal
  3. watt
  4. newton per meter

• 12. What is unit of Work and Energy ?

  1. Joule
  2. kilogram
  3. amphere
  4. meter

• 13. What is unit of Viscosity ?

  1. coulomb
  2. newton second per square meter
  3. watt per meter per degree celcius
  4. joule per kilogram per Kelvin

• 14. What is unit of Electrical Capacity ?

  1. henry
  2. farad
  3. volt
  4. ohm

• 15. What is unit of Astronomical distance ?

  1. light year
  2. angstrom
  3. weber
  4. lux

• 16. Scalar Quantities are

  1. physical quantities which have magnitude only and no direction
  2. physical quantities which have no magnitude only and only direction
  3. physical quantities which have magnitude only and direction
  4. physical quantities which have no magnitude and no direction

• 17. What is displacement ?

  1. Longest distance covered by a body in a random direction.
  2. Shortest distance covered by a body in a random direction.
  3. Shortest distance covered by a body in a definite direction.
  4. Longest distance covered by a body in a definite direction.

• 18. Which law is also called law of inertia ?

  1. Newton first law
  2. Newton second law
  3. Newton third law
  4. All of above

• 19. What is newton third law of motion ?

  1. Every body maintains its initial state rest or motion unless no external force is applied.
  2. The rate of change in momentum of a body is directly proportional to the applied force on the body and takes place in the direction of force.
  3. To every action there is equal and opposite reaction.
  4. None of above.

• 20. If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states this ?

  1. Newton first law
  2. Newton second law
  3. Newton third law
  4. Principle of conservation of linear momentum