Youngest to develop an innovative Police whistle The Book of World Record Holder

Rajashri Sanjay Kabra, born on July 21, 1998, is from Washim, Maharashtra. She uploaded 102 Physics videos to her YouTube channel in one day, January 9, 2021. The videos helped students understand topics with examples and numerical sums. They were between 4 minutes 43 seconds and 18 minutes 42 seconds long. This was confirmed on January 11, 2021.