Answers

2016-02-13T08:35:38+05:30
Since concave lens diverges the light rays rays are not concentrated in a particular region paper wont be burnt
0
2016-02-13T11:09:59+05:30
You may move th paper left or right but the rays never meet on th paper so burning is not possible. As the rays diverge not converge in a concave lens
0