We wish to obtain an erect image of an object, using a concave mirror of focal length 15 cm. What should be the range of distance of the object from the mirror? What is the nature of the image? Is the image larger or smaller than the object? Draw a ray diagram to show the image formation in this case.
Solution and Explanation
Range of object distance = \(0\ cm\) to \(15\ cm\)
A concave mirror gives an erect image when an object is placed between its pole (P) and the principal focus (F).
Hence, to obtain an erect image of an object from a concave mirror of focal length 15 cm, the object must be placed anywhere between the pole and the focus. The image formed will be virtual, erect, and magnified in nature, as shown in the given figure.
Top Questions on Spherical Mirrors
- Distance between twice-magnified virtual image of an object placed in front of mirror is 15 cm. Find focal length of spherical mirror in cm.
- JEE Main - 2024
- Physics
- Spherical Mirrors
- Distance between virtual image, which is twice the size of object placed in front of mirror and object is 45 cm. The magnitude of focal length of the mirror is _____cm.
- JEE Main - 2024
- Physics
- Spherical Mirrors
- A convex lens of focal length $20\, cm$ is placed in front of convex mirror with principal axis coinciding each other The distance between the lens and mirror is $10\, cm$ A point object is placed on principal axis at a distance of $60 \, cm$ from the convex lens The image formed by combination coincides the object itself The focal length of the convex mirror is ________ $cm$
- JEE Main - 2023
- Physics
- Spherical Mirrors
- The radius of curvature of a spherical mirror is 16 cm. What is the focal length ?
- TS POLYCET - 2023
- Physics
- Spherical Mirrors
- When the object lies at infinite distance in front of concave mirror then the nature of the image is
- WBJEE JENPAS UG - 2023
- Physical Sciences
- Spherical Mirrors
Questions Asked in CBSE X exam
- Enumerate the benefits of having an access control system installed in a premise.
- CBSE Class X - 2024
- Security Structure
- Enlist any four formatting options provided by Gmail for you to compose an email.
- CBSE Class X - 2024
- Email Messaging
- You are a security supervisor in a hospital. Your security manager has asked you to check the signage system in the hospital building and prepare a report. What all aspects would you check in this regard?
- CBSE Class X - 2024
- Security Structure
- Write about any two provisions of Rajiv Gandhi Shramik Kalyan Yojna, 2005.
- CBSE Class X - 2024
- Laws Governing Private Security
- Why are ground search and rescue services increasingly required in urban and sub-urban areas to locate which persons?
- CBSE Class X - 2024
- Disaster Management and Emergency Response
Notes on Spherical Mirrors
Concepts Used:
Spherical Mirrors
A spherical mirror is a mirror which has been cut out of a spherical surface.
There are two kinds of spherical mirrors:
- Convex Mirror
- Concave Mirror
Concave Mirror
Concave mirrors are also called converging mirrors, because in these types of mirrors, light rays converge at a point after impact and reflect back from the reflective surface of the mirror.
Convex Mirror
The convex mirror has a reflective surface that is curved outward. Regardless of the distance between the subject and the mirrors, these mirrors are "always" virtual, upright and reduced.