Copper nanoparticles have different applications for different properties. It is used for adhesive, electrical wire conductors, batteries, and solar cells. The no. of methods for the synthesis of copper nanoparticles is found in the literature. In this present study, copper nanoparticles are synthesized through the reduction of ultrasound waves on the synthesis of nanoparticles using an ultrasonic bath. In this synthesis, the temp. Required is 333K. The entire process is carried out through an ultrasonic bath, and in this, the formation of the product is only because of the formation of ultrasound waves in the sonicator. While adding Hydrazine hydrate, the temp. Required is 333K. It is found that in most papers, the literature required a basic medium for the formation of copper nanoparticles. But in this present work, we have successfully adopted the methodology for the synthesis of copper nanoparticles without the use of any basic medium.