Question

Name a mirror that can give an erect and enlarged image of an object.

Answer 1

Hint: For answering these types of questions one should first study the characteristics of the plane, concave and convex mirror. Concave images can be both real and inverted and can produce real or virtual images, whereas convex images produce virtual and erect images. Images formed can be behind the mirror (for virtual) or in front of the mirror (for real); they can also be enlarged, reduced, or the same size as that of the object.
The Concave mirror reflects the ray of light from the center on the same path.


Complete step-by-step solution:
Concave Mirror: A concave mirror is such a mirror for which if we look from the front it appears to be like a piece of thin round glass whose front surface is shining and bent inward. The back surface of the concave mirror is covered with paint and bulging outward.
Characteristics of Concave mirror:
If an object is placed between pole (P) and focus (F) of a concave mirror then the image formed will be virtual, erect, magnified, and formed behind the mirror
When an object is placed at focus(F) of a concave mirror then the image is formed at infinity, the image is real, inverted, highly magnified.
When an object is placed between the focus(F) and center of curvature of a concave mirror then the image is formed beyond the center of curvature. Image is real, inverted, magnified.
When an object is placed at the center of curvature of the concave mirror then the image is formed at the center of curvature, the image is real, inverted, the same size as the object.
Use of concave mirror: This mirror is used during the shaving process as the image formed is erect and enlarged, used in solar ovens, used in an electronic microscope, they are widely used in headlights of automobiles and motor vehicles where the light source is placed at the focus of the mirror so that after reflecting the light rays can travel over a large distance as parallel light beams of high intensity. So after studying all the above characteristics the final answer will be a Concave mirror that gives an erect and enlarged image of an object.

Note: As the object is moved closer to the mirror the image distance increases; meanwhile, the image height increases. If the object is inside the focal point then a virtual image is formed. If the object is outside the focal point, a real image is formed. Concave mirrors produce both real and virtual images which can be erect (for virtual) or inverted (for real) For a Concave Mirror, the focal distance is half of the radius of the focal length.