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  • Identify the device used as a spherical mirror or lens in the following cases, when the image formed is virtual and erect in each case. (a) Object is placed between device and its focus, image formed is enlarged and behind it.

Identify the device used as a spherical mirror or lens in the following cases, when the image formed is virtual and erect in each case.
(a) Object is placed between the device and its focus, image formed is enlarged and behind it.
(b) Object is placed between the focus and device, image formed is enlarged and on the same side as that of an object.
(c) Object is placed between infinity and the device, image formed is diminished and between focus and optical center on the same side as that of the object.
(d) Object is placed between infinity and device, image formed is diminished and between pole and focus, behind it.

Answers (1)

Explanation:-

(a) A concave mirror is used.

It forms a virtual, enlarged, behind the mirror

(b) Convex lens.

Virtual, enlarged, same side as the object

(c) Concave lens

Virtual, diminished, between focus and optical center

(d) Convex mirror

Real, diminished, between pole and focus, behind the mirror

 

 

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