Question

Explain image formation for the following in case of concave mirror. Make suitable ray diagrams. 

(a) Object is between infinity and centre of curvature 

(b) Object is at centre of curvature 

(c) Object is between centre of curvature and focus 

(d) Object–is at focus 

(e) Object is between focus and pole

Answer 1

position of the object	position of the image	size of the image	Nature of the image
(a) Beyond C	Between F and C	Diminished	Real and inverted
(b) At C	At C	Same size	Real and inverted
(c) Between C and F	Beyond C	Enlarged	Real and inverted
(d) At F	At infinity	Highly enlarged	Real and inverted
(e) Between p and F	Behind mirror	Enlarged	Real and inverted