(Update) Hey KalpeshB4! I was facing the sameissue earlier today, turns out I had a loose connection. I cut the wire and thejumper and soldered it, and now it's working perfectly fine.
Correction: LiDAR can sense from 30cm to 1200cm (12m). Are you using the same model?
I am not sure about the environment you're using to test your LiDAR. LiDAR can sense up to 12m (12000 cm). In outdoor conditions the value can lie between 30cm to 7000cm
Output distance is in cm. Can you share what kind of output you're getting?