Science, asked by wwwanuanas190, 6 months ago

Fill in the blanks:
(i) sound travels at a ................... velocity than light.
(ii) when there lightning, we first................and then hear it .
(iii) SONAR makes use of...................waves whie RADAR makes use of...............waves.
(iv) microphone converts sound into....................while speaker converts eletric signal into..................​

Answers

Answered by sanjana28006
2

Answer:

1. lower

2.saw

3.ultra sonic and infrasonic

4 electrical signals and mechanical energy

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