Question

In a concave mirror when object is placed at focus (F), image is formed​

Answer 1

Answer:-

In a concave mirror when object is placed at the focus, image is formed at infinity.

• The size of this image formed will be highly and last and the nature of the image will be real and inverted.

$\rule{200}1$

Extra Information about image formation by concave mirror:

$\boxed{\begin{tabular}{c|c|c|c}\bf{Position\:of\:object} & \bf{Position\:of\:image} & \bf{Size\:of\:image} & \bf{Nature\:of\:the\:image}\\\cline{1-4}At\:infinity & At\:Focus & Highly\:diminished & Real\:and\: inverted\\\cline{1-4}Beyond\:C & Between\:C\:and\:F & Diminished & Real\:and\:inverted\\\cline{1-4}At\:C & At\:C & Same\:size & Real\:and\:inverted\\\cline{1-4}Between\:C\:and\:F & Beyond\:C & Enlarged & Real\:and\:inverted\\\cline{1-4}At\:F & At\:infinity & Highly\:enlarged & Real\:and\:inverted\\\cline{1-4}Between\:P\:and\:F & Behind\:the\:mirror & Enlarged & Virtual\:and\:Erect \end{tabular}}$

$\rule{200}2$

Answer 2

Explanation:

when when an object is placed at focus of a concave mirror the minimum will be formed at