Questions
A hospital uses an ultrasonic scanner to locate tumours in a tissue. The operating frequency of the scanner is 4.2 MHz. The speed of sound in a tissue is 1.7 km-s–1. The wavelength of sound in the tissue is close to
a
4×10−4 m
b
8×10−3 m
c
4×10−3 m
d
8×10−4 m
detailed solution
Correct option is A
λ=vn=1.7×10004.2×106=4×10−4mTalk to our academic expert!
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