Velocity of sound waves — task. Science State Board, Class 10.

PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

Book Free Demo

Textbook questions:

Choose the right answer:

1. The frequency, which is audible to the human ear, is __________.

\(20\) \(kHz\)
\(10\) \(kHz\)
\(1500\) \(kHz\)
\(2000\) \(kHz\)

2. The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?

speed
frequency
wavelength
none of these

Login or Fast registration

Previous exercise

Exit to the topic

Did you find an error?

Register for free to see more content

Register for free to see more content