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General Science question from Social Forest Worker exam, 2026 by JKSSB

In the context of a concave mirror, if an object is placed at the focus, then- 

I. The image will be formed at infinity. 
II. The size of the image formed will be highly enlarged. 
III. The nature of the image will be virtual and erect. 

 Which of the above statements stands true?

Last updated Jul 22, 2026
Correct Answer: Option B — I and II only
The correct option is B) I and II only.

Explanation
When an object is placed at the principal focus (F) of a concave mirror:

Statement I is TRUE: The reflected rays become parallel to each other and meet at infinity.

Statement II is TRUE: The size of the image formed at infinity is highly enlarged (magnified).

Statement III is FALSE: The nature of the image is real and inverted, not virtual and erect. (A concave mirror forms a virtual and erect image only when the object is placed between the Pole and the Focus).
Answer verified by Quintessence Classes faculty — Karan Nagar, Srinagar.

About this question

JKSSB Social Forest Worker 2026

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Exam JKSSB
Recruitment Social Forest Worker
Year 2026
Subject General Science
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