In which of the following, the image of an object placed at infinity will be highly diminished and point sized ?a)Concave mirror onlyb)Convex mirror onlyc)Convex lens onlyd)Concave mirror, convex mirror, concave lens and convex lensCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Answer is d, Bcs in concave Mirror, convex mirror, concave lens, convex lens image of an object placed at infinity will be highly diminished and point sized.

Answer

Image of an object placed at infinity will be highly diminished and point sized in case of all the four i.e. concave mirror, convex mirror, concave lens and convex lens.

so correct option is D

Answer

Image formation by different optical devices:

1. Concave Mirror:
- A concave mirror is a converging mirror that can form both real and virtual images.
- When an object is placed at infinity, the rays of light coming from the object are parallel to the principal axis of the mirror.
- These parallel rays of light reflect from the concave mirror and converge at a point on the principal axis.
- The image formed in this case is a highly diminished and point-sized image formed at the focus of the concave mirror.

2. Convex Mirror:
- A convex mirror is a diverging mirror that always forms virtual images.
- When an object is placed at infinity, the rays of light coming from the object are already diverging.
- These diverging rays of light reflect from the convex mirror and appear to come from a point behind the mirror.
- The image formed in this case is a highly diminished and point-sized virtual image formed behind the convex mirror.

3. Convex Lens:
- A convex lens is a converging lens that can form both real and virtual images.
- When an object is placed at infinity, the rays of light coming from the object are parallel to the principal axis of the lens.
- These parallel rays of light refract through the convex lens and converge at a point on the principal axis.
- The image formed in this case is a highly diminished and point-sized image formed at the focus of the convex lens.

4. Concave Lens:
- A concave lens is a diverging lens that always forms virtual images.
- When an object is placed at infinity, the rays of light coming from the object are already diverging.
- These diverging rays of light refract through the concave lens and appear to come from a point in front of the lens.
- The image formed in this case is a highly diminished and point-sized virtual image formed in front of the concave lens.

Explanation of Correct Answer (Option D):
- The correct answer is option D because all the given options include optical devices that can form highly diminished and point-sized images when an object is placed at infinity.
- Concave mirrors, convex mirrors, concave lenses, and convex lenses all have the ability to form such images under certain conditions.
- It is important to note that the image formed by the convex mirror and concave lens is always virtual, while the image formed by the concave mirror and convex lens can be either real or virtual depending on the position of the object.

Overall, all the given options can form highly diminished and point-sized images when an object is placed at infinity.

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