Question

A student holding a mirror in his hand directed the reflecting surface of the mirror towards the sun. He then directed the reflected light on to a sheet of paper held close to the mirror.
1. what should he do to burn the paper ?
2. which type of mirror does he have ?
3. Will he able to determine the approximate value of focal length of this mirror from this activity ? Give reason and draw ray diagram to justify your answer in this case.​

Answer 1

1) He should keep the page at focus.

2) concave mirror

3)yes,by measuring it with scale...                                                                                          

Answer 2

Answer:

I have already answer this question so I am giving the the attachment if you like so please mark me as a branilist...