Waves
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Question : 7
Total: 27
A hospital uses an ultrasonic scanner to locate tumours in a tissue. What is the wavelength of sound in the tissue in which the speed of sound is 1.7 km s – 1
Solution:
Here, v = 1.7 km s − 1 = 1.7 × 10 3 m s − 1
υ = 4.2 MHz = 4.2 × 10 6 Hz
Now,λ =
=
= 0.405 × 10 − 3 m
Now,
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