a. Find the size (in mm) of the smallest detail observable in human tissue with 11.5 MHz ultrasound. _____ mm b. Is its effective penetration depth great enough to examine the entire eye (about 3.00 cm is needed)? c. What is the effective penetration depth (in cm)? _____ cm

a. Find the size (in mm) of the smallest detail observable in human tissue with 11.5 MHz ultrasound. _ mm b. Is its effective penetration depth great enough to examine the entire eye (about 3.00 cm is needed)? c. What is the effective penetration depth (in cm)? _ cm

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter17: Physics Of Hearing

Section: Chapter Questions

Problem 78PE: (a) Find the size of the smallest detail observable in human tissue with 20.0-MHz ultrasound. (b) Is...

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Concept explainers

Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.

Question

a. Find the size (in mm) of the smallest detail observable in human tissue with 11.5 MHz ultrasound.

_____ mm

b. Is its effective penetration depth great enough to examine the entire eye (about 3.00 cm is needed)?

c. What is the effective penetration depth (in cm)?

_____ cm

d. What is the wavelength (in µm) of such ultrasound in 0°C air?

_____ um

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