Physics Questions Answers

  • 43. What is the maximum value of deforming force upto which a material shows elastic property and above which the material loses it ?

    1. Elasticity
    2. Strain
    3. Elastic Limit
    4. Stress
    Answer :

    Option C

  • 44. What is the range of mercury thermometer ?

    1. Only assumption I is implicit
    2. Only assumption II is implicit
    3. Either I or II is implicit
    4. Neither I nor II is implicit
    5. Both I and II are implicit
    6. 0 degree Celsius to 350 degree Celsius
    7. -10 degree Celsius to 350 degree Celsius
    8. -20 degree Celsius to 350 degree Celsius
    9. -30 degree Celsius to 350 degree Celsius
    Answer :

    Option

  • 45. Who discovered Atom ?

    1. Only assumption I is implicit
    2. Only assumption II is implicit
    3. Either I or II is implicit
    4. Neither I nor II is implicit
    5. Both I and II are implicit
    6. Madam Curie
    7. James Chadwick
    8. Rutherford
    9. John Dalton
    Answer :

    Option

    Explanation:

    John Dalton discovered Atom in 1808,

    Madam Curie discovered Radium in 1898,

    James Chadwick discovered Neutron in 1932,

    Rutherford discovered Proton in 1919.

  • 46. What is unit of Electrical Capacity ?

    1. Only conclusion I follows
    2. Only conclusion II follows
    3. Either I or II follows
    4. Neither I nor II follows
    5. Both I and II follow
    6. henry
    7. farad
    8. volt
    9. ohm
    Answer :

    Option

    Explanation:

    henry is unit of Magnetic Induction,

    volt is unit of Potential Difference,

    ohm is unit of Electric Resistance.

  • 47. Which instrument is used to measure heat radiation ?

    1. managers should have a balanced mind.
    2. assembly lime will exist in service organisations.
    3. interpersonal skills will become more important in the future work place.
    4. manufacturing organisations ignore importance of people.
    5. service organisations will not deal with objects and things.
    6. Radar
    7. Salinometer
    8. Refractometer
    9. Radio micrometer
    Answer :

    Option

    Explanation:

    Radar - is used to detect the direction and speed of an object by means of radiowaves,

    Salinometer - is used to determine salinity of solutions,

    Refractometer - is used to measure refractive indices.

  • 48. Which instrument is used to measure depth of ocean ?

    1. Galvanometer
    2. Fluxmeter
    3. Endoscope
    4. Fathometer
    Answer :

    Option D

    Explanation:

    Galvanometer - measures electric current,
    Fluxmeter - measures magnetic flux,
    Endoscope - used to examine internal parts of the body.

  • 49. Alexander Graham Bell invented

    1. Telephone
    2. Telescope
    3. Television
    4. Tank
    Answer :

    Option A

    Explanation:

    Alexander Graham Bell of USA invented Telephone in 1876,

    Telescope was invented by Hans Lippershey of Netherlands in 1608,

    Television was invented by John Logie Bared of Scotland in 1926,

    Tank was invented by Sir Ernest Swington of England in 1914.

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