Question

mention the precautions to be taken then finding the image distance using concave mirror when an object is kept in front of it on its principal axis at different locations ​

Answer 1

Answer:

Precautions:

1) The distant object should be placed in the area which is fully illuminated and therefore we are able to get the distinct image.

2) The screen and the concave mirror is in straight row or you can say parallel and be in the range of measuring scale.