Physics Questions Answers

  • 1. 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
    Answer :

    Option A

  • 2. What is Hooke's Law ?

    1. Stress is inversely proportional to strain.
    2. Stress is directly proportional to strain.
    3. Stress and strain are dependent on each other.
    4. Stress and strain are independent of each other.
    Answer :

    Option B

  • 3. Which instrument is used to measure strength of direct current ?

    1. Stroboscope
    2. Streoscope
    3. Tangent Galvanometer
    4. Tachometer
    Answer :

    Option C

    Explanation:

    Stroboscope - is used to view rapidly moving objects,

    Streoscope - is used to view two dimensional pictures,

    Tachometer - is used to determine rotational speed of a shaft (used in aeroplanes and motor boats).

  • 4. K. Macmillan invented

    1. Bicycle
    2. Barometer
    3. Calculating Machine
    4. Centigrade Scale
    Answer :

    Option A

    Explanation:

    K. Macmillan of Scotland invented Bicycle in 1839.

    Barometer was invented by E. Torricelli of Italy in 1644.

    Calculating Machine was invented by Pascal of France in 1642.

    Centigrade Scale was invented by A. Celsius of France in 1742.

  • 5. 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.
    Answer :

    Option C

  • 6. 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
    Answer :

    Option A

  • 7. What is unit of Work and Energy ?

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

    Option A