Comments and Discussions You don't need to login to post your comment Comments: 30 Views: 60k Likes: 120k votes Richa IIIT Hydrabad 🌐 Andra Pradesh Depth of penetration in free space is Infinity Was this answer helpful? votes Anu 🌐 Telangana Correct answer is "Infinity". But Infinity is not in my options so "None of these" Was this answer helpful? Submit