Question

A 20 cm focal length mirror forms a virtual, erect and diminished image between focus and pole, what could be the position of object : *



at infinity

between infinity and pole

at F

at C

pls fast its argent

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Answer 1

AnswEr:

A 20 cm focal length mirror forms a virtual, erect and diminished image between focus and pole, what could be the position of object:

i) at infinity

ii) between infinity and pole

iii) at F

iv) at C

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Here,

Given properties of image are:-

• Virtual
• Erect
• Diminished

When object is between infinity and pole of a convex mirror then a virtual, erect and diminished image is formed between pole and focus behind the mirror.

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★ Position and nature of image in convex mirror:

$\begin{gathered}\begin{lgathered}\begin{tabular}{| c | c | c | c | c | c |} \cline{1-4} \bf{Position of} & \bf{Position of} & \bf{Size of} & \bf{Nature of}\\ \bf{object} & \bf{image} & \bf{image} & \bf{image} \\ \cline{1-4}\sf{At infinity} & \sf{At F, behind mirror} & \sf{Highly} & \sf{Virtual and}\\ \sf{} & \sf{} & \sf{diminished} & \sf{erect}\\ \cline{1-4}\sf{Between infinity} & \sf{Between F and P,} & \sf{Diminished} & \sf{Virtual and }\\ \sf{and P} & \sf{behind mirror} & \sf{} & \sf{erect}\\ \cline{1-4}\end{tabular}\end{lgathered}\end{gathered}$