Question

which lens is used burn paper witout using macth box​

Answer 1

Answer:

Convex lens

Explanation:

We know that a convex lens brings a beam of parallel incident rays to a focus at its focal point.

Answer 2

Explanation:

Yes, it is possible to burn a piece of paper, in daylight, by using a convex lens instead of a match or any other direct flame. We know that a convex lens brings a beam of parallel incident rays to a focus at its focal point.