Question

The wavelength of ultrasonic waves in air is of the order of-

• A. $5\times 10^{-5}$ cm
• B. $5\times 10^{-8}$ cm
• C. $5\times 10^5$ cm
• D. $5\times 10^8$ cm

Answer 1

Answer: (A)

Wavelength of ultrasonic waves in air is of the order of $5\times 10^{-5}cm$.