Question

plz tell these question below given​

Answer 1

Answer:(i) the lens type is converging

Explanation:

Answer 2

Answer:

Answer ii)

               one optical instrument is magnifying glass.

               another instrument is telescope.

Answer iii)

                as said in the question, the mirror is concave. Placing a object at f/2 means to place the object in between pole and focus of the mirror. so the characteristic of that image are as follows :-

i) the image is virtual and erect.

ii) the image is highly magnified.

iii) on the opposite side ( inside the mirror) of the object.

If any doubts, you can ask me

Explanation: