Question

show that concave mirrors always produce a parallel beam of light

Answer 1

Please refer to the pic added because I can't draw any diagrams here.
For shortcut explaination you may link to the last pic added.
In details if you would like to understand please have a glance on the first 4pics.
Hope it helps!
Please mark my answer as brainliest if it's helpful pleaseeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee!
I request!