Question
An object is placed at infinity in front of a concave mirror. Where is the image formed?
The correct answer is
At the principal focus (F)
Concave Mirror Image Formation: Object at Infinity
When an object is placed at infinity in front of a concave mirror, the rays of light coming from the object are parallel to the principal axis.
Ray Behavior and Convergence
- Parallel rays striking the concave mirror reflect and converge at a specific point.
- According to the laws of reflection, all parallel rays converge at the principal focus (F) of the concave mirror after reflection.
Image Location
Therefore, when the object is at infinity:
- The image is formed at the principal focus (F).
- The image is highly diminished (point-sized), real, and inverted.
The correct option is that the image is formed at the principal focus (F).
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Important Questions from Mirrors and Images
Which one of the following telescopes contains only mirrors?
The correct relation between the radius of curvature R and focal length f of a spherical mirror is
Spherical mirror formula relating an object distance ‘u’, image distance ‘v’ and focal length of mirror ‘f’ may be applied to a plane mirror when
The image of an object formed by a plane mirror is
The image we see in plane mirror is
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