SELECT * FROM question_mgmt as q WHERE id=6548 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=12 AND subId=16 AND chapterId=376 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 8th science Sound lightning and thunder take place in the sky at the

Question:

Lightning and thunder take place in the sky at the same time and at the same distance from us. Lightning is seen earlier and thunder is heard later. Can you explain?

Answer:

In the sky, lightning and thunder takes place at the same time and at the same distance from us. Lightning is seen earlier and then thunder is heard later because the speed of the light is very large in comparison to the speed of sound in air.

Speed of light = 3ooooo km/s

Speed of sound in air = 330 m/s air


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