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Q69
(NDA-I/2026)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
It has been observed that a mirror always forms the image between the pole and the focus, irrespective of the location of the object. Which one of the following is correct in respect of the nature of the mirror?
Result
Your answer:
—
·
Correct:
B
Explanation
A convex mirror (diverging mirror) always forms a virtual, erect, and diminished image of a real object. Regardless of the object's position—whether it is at infinity or placed anywhere between infinity and the pole (P)—the image is consistently formed behind the mirror, specifically between the pole (P) and the principal focus (F).
- Plane Mirror: Forms an image at the same distance behind the mirror as the object is in front; it does not confine the image between a pole and focus.
- Concave Mirror: The image position varies significantly based on the object's distance (e.g., at infinity, beyond C, at C, between C and F, at F, or between F and P). It can form real, inverted images or a virtual image behind the mirror, but not exclusively between P and F for all object locations.
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