+2 Physics One Mark Online Test Unit 1 English Medium

3 Questions | Total Attempts: 210

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+2 Physics One Mark Online Test Unit 1 English Medium

P. ILAIYARAJA M. Sc. ,B. Ed. , PG ASST IN PHYSICS , GHSS, PANCHANATHIKULAM EAST, NAGAPPATTINAM.


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Questions and Answers
  • 1. 
    A glass rod rubbed with silk acquires a charge of +8 × 10−12C. The number of electrons it has gained or lost
    • A. 

      5 × 107 (lost)

    • B. 

      5 × 10−7 (gained)

    • C. 

      2 × 10−8 (lost)

    • D. 

      –8 × 10−12 (lost)

  • 2. 
    The electrostatic force between two point charges kept at a distance d apart, in a medium εr = 6, is 0.3 N. The force between them at the same separation in vacuum is
    • A. 

      1.8 N

    • B. 

      0.5 N

    • C. 

      20 N

    • D. 

      2 N

  • 3. 
    Electic field intensity is 400 V m1 at a distance of 2 m from a point charge. It will be 100 V m1 at a distance?
    • A. 

      4 m

    • B. 

      4 cm

    • C. 

      1.5 m

    • D. 

      50 cm