Question

hey dear..

solve it..both 153 and 154​

Answer 1

Answer:

Q. 153 -- 1st option is the correct answer

wavelength will be 1.21 Angstrom

hint - distance between two consecutive nodes or antinodes is wavelength/4

Q. 154 -- 1st option is the correct answer

Freq will be 1.47

Answer 2

Answer:

hey

153. option A

154. Option A