Question

4
Q.18 The wavelength of
ultrasonic waves in air is of the
order of *
O (a) 5 x 10^-5 cm
O (b) 5 x 10^-8 cm
(c) 5 x 10^5 cm
O (d) 5 x 10^8 cm​

Answer 1

Answer:

c is the answer of ur question

Answer 2

Answer:

the answer will be

Explanation:

option c is the answer