11th Class Physics Waves / तरंगे Question Bank Waves Conceptual Problems

  • question_answer
    We always see lightning before we hear thundering. Why?

    Answer:

                    The speed of light \[(3\times {{10}^{8}}m{{s}^{-1}})\] is much larger than the speed of sound\[(\tilde{\ }3\text{40 m}{{\text{s}}^{\text{-1}}})\]. Consequently, the flash of light reaches us much earlier than the sound of thunder.


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