Physics, asked by Tapasi3997, 1 year ago

A source of 1kHz sound is moving straight towards you at a speed equal to 0.9 times the speed of sound. What is the frequency you observe?

a. 0.1 kHz
b. 0.5 kHz
c. 1.9 kHz
d. 10 kHz

Answers

Answered by Mukeshsaini7

$d= 1 \div 1 - 0.9 \div s = 1 \div 0.1 = 10 then answer 10khz$
Answer E=10kHZ

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Tapasi3997: I'd for sure but I see no option there in this case

Mukeshsaini7: iam sure my answee is right

Tapasi3997: yeah your answer is right. but I can't see any option to give you the brainiest answer hit. I mean I see no options here

Mukeshsaini7: ok option avelible ho to please give me brain list answer

Tapasi3997: sure

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