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9th Standard English Medium Science Subject Light Book Back 2 Mark Questions with Solution Part - II updated Book back Questions Question Bank Software May-13 , 2022

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9th Standard English Medium Science Subject Light Book Back 2 Mark Questions with Solution Part - II updated Book back Questions

9th Standard English Medium Science Subject Light Book Back 2 Mark Questions with Solution Part - II

9th Standard

    Reg.No. :
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Science

Time : 00:30:00 Hrs
Total Marks : 10
    5 x 2 = 10

  1. The speed of light in air is 3 \(\times\) 108ms-1 and in glass it is 2 \(\times\) 108ms-1 what is the refractive index of glass

  2. Give two examples of transparent medium that are denser than air

  3. A coin in a glass beaker appears to rise as the beaker is slowly filled with water, why?

  4. Name the spherical mirror(s) that has/have 
    i) Virtual principal focus
    ii) Real principal focus

  5. What is speed of light in vacuum? 

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