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Q22
(CISF/2020)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
An object is kept at infinity from the position of a concave (spherical) mirror. Which one is not true about the image of the object ?
Result
Your answer:
—
·
Correct:
B
Explanation
When an object is placed at infinity from a concave mirror, the incident rays are parallel to the principal axis. After reflection, these rays converge at the principal focus (F). The characteristics of the image formed are:
- Position: At the focus (F).
- Nature: Real and inverted.
- Size: Highly diminished or point-sized.
Option B is incorrect because the size of the image is the same as the size of the object only when the object is placed at the Center of Curvature (C) of the concave mirror. Therefore, statement B is the one that is not true regarding an object at infinity.
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