Biomedical Engineering > GATE 2020 > Ultrasound Imaging
A 5 MHz ultrasound pulse is used to image a tumor at a depth of 2 cm in a soft tissue. It takes time t for the reflected echo from the tumor to come back to the receiver. Instead, if a 2.5 MHz wave is used, how long will it take for the echo from the same tumor to arrive at the receiver?
A
t/2
B
t
C
2t
D
4t

Correct : b

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GATE Biomedical Engineering 2020 GATE BM 2020 Q17 ultrasound echo time speed of sound in soft tissue ultrasound pulse imaging biomedical ultrasound GATE sound wave frequency and speed

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