9th Class Science Sample Paper Sample Paper - 4 Term - 1

  • question_answer
      Explain what happens, when a beam of light is passed through a colloidal solution?

    Answer:

      When a beam of light is passed through a colloidal solution, its path becomes visible. This is due to the scattering of light by colloidal particles. This is known as Tyndall effect.                 This is shown in the diagram below                                                                                                                                          (2)                                                                                                                                        (1)


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