Vividha told Vasudha that she will show her some magic. Vividha took a metallic pipe. She asked Vasudha to hold one of its ends close to her ears. She gently tapped the other end of the pipe with a metallic object. She asked Vasudha what she heard. Vasudha said she heard two sounds.
$(a)$ Was this magic? Why did Vasudha hear two sounds?
$(b)$ What values are imbibed by Vividha?

(N/A) This was not magic. The first sound Vasudha heard was the one which had travelled to her ears through the metallic pipe (solid),and the second sound was the one which travelled through the air. This happens because sound travels at different velocities in different media (solids,liquids,and gases).
$(b)$ Vividha demonstrates a scientific aptitude and a spirit of inquiry,as she uses a simple experiment to explain physical phenomena.