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  3. 6th Class
  4. Science
  5. Light, Shadows and Reflections

6th Class Science Light, Shadows and Reflections Question Bank Light, Shadow and Reflection

  • question_answer
    Speed of light in vacuum is:

    A) \[3\times {{10}^{8}}km/h\]      

    B) \[3\times {{10}^{8}}m/s\]

    C) \[3\times {{10}^{8}}m/h\]   

    D)        \[3\times {{10}^{8}}m/s\]

    E) None of these

    Correct Answer: B

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