The source of both light and sound

Reference no: EM13679573

Take the speed of sound to be 340 m/s. A thunder clap is heard about 3 s after the lightning is seen. The source of both light and sound is:

1) Moving overhead faster than the speed of sound

2) Emitting a much higher frequency than is heard

3) Emitting a much lower frequency than is heard

4) About 1000 m away

5) Much more than 1000 m away

Reference no: EM13679573

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