Introduction
Understanding the reflection of light at curved surfaces is a fundamental concept in physics, particularly for students preparing for the Telangana SSC examinations and other competitive exams. This article provides over 100 concise one-liner questions and answers, carefully curated from the Telangana SSC Physics Textbook and credible online sources. These questions cover key concepts such as concave and convex mirrors, image formation, sign conventions, and practical applications, making it an essential resource for students aiming to excel in their exams. Whether you’re revising for school tests or competitive examinations, this guide will help you master the topic of reflection of light at curved surfaces.
One-Liner Questions and Answers on Reflection of Light at Curved Surfaces
- What is the center of the reflecting surface of a spherical mirror called?
Answer: Pole - What is the point where parallel rays converge or appear to diverge after reflection from a spherical mirror?
Answer: Principal focus - What is the relation between focal length (f) and radius of curvature (R) for a spherical mirror?
Answer: R = 2f - Which mirror is used in car headlights to produce a strong beam of light?
Answer: Concave mirror - Why is a convex mirror used as a rear-view mirror in vehicles?
Answer: It forms virtual, erect, and diminished images, providing a wide field of view. - What type of image is formed when an object is placed at the focus of a concave mirror?
Answer: Image is formed at infinity. - Where is the image formed when an object is placed between the focus and center of curvature of a concave mirror?
Answer: Beyond the center of curvature - What type of mirror always forms a virtual, erect, and diminished image?
Answer: Convex mirror - What is the mirror formula for spherical mirrors?
Answer: 1/f = 1/u + 1/v - What is the magnification formula for a spherical mirror?
Answer: m = -v/u - What kind of image is formed by a plane mirror?
Answer: Virtual, erect, and same size as the object - What happens to a light ray passing through the center of curvature of a concave mirror?
Answer: It reflects back along the same path. - What is the nature of the image formed by a concave mirror when the object is at infinity?
Answer: Real, inverted, and point-sized - Which mirror is used by dentists to examine teeth?
Answer: Concave mirror - What is the sign convention for the focal length of a concave mirror?
Answer: Negative - What is the sign convention for the focal length of a convex mirror?
Answer: Positive - Where is the image formed when an object is placed at the center of curvature of a concave mirror?
Answer: At the center of curvature - What type of image is formed when an object is placed between the pole and focus of a concave mirror?
Answer: Virtual, erect, and magnified - What is the principal axis of a spherical mirror?
Answer: An imaginary line passing through the pole and center of curvature - Why do convex mirrors always produce virtual images?
Answer: Reflected rays diverge and appear to meet behind the mirror. - What is the nature of the image formed by a convex mirror when the object is at infinity?
Answer: Virtual, erect, and point-sized - What is the angle of reflection when a ray is incident at 30° on a plane mirror?
Answer: 30° - What type of mirror is used in solar furnaces?
Answer: Concave mirror - What happens to the size of the image as the object moves away from a concave mirror?
Answer: The image size becomes smaller. - What is the center of curvature of a spherical mirror?
Answer: The center of the sphere of which the mirror is a part - What type of mirror is used as a shaving mirror?
Answer: Concave mirror - What is the nature of the image formed when an object is placed beyond the center of curvature of a concave mirror?
Answer: Real, inverted, and diminished - What is the focal length of a plane mirror?
Answer: Infinity - What type of mirror is used in street lights to spread light?
Answer: Convex mirror - What is the sign convention for distances measured in the direction of incident light?
Answer: Positive - What is the sign convention for distances measured opposite to the direction of incident light?
Answer: Negative - What is the nature of the image formed by a plane mirror when the object is 10 cm away?
Answer: Virtual, erect, and 10 cm behind the mirror - What is the purpose of using a concave mirror in a torch?
Answer: To produce a parallel beam of light - What is the magnification of a plane mirror?
Answer: +1 - What happens to a ray parallel to the principal axis after reflection from a concave mirror?
Answer: It passes through the focus. - What happens to a ray parallel to the principal axis after reflection from a convex mirror?
Answer: It appears to diverge from the focus. - What is the image distance when an object is placed at infinity in front of a convex mirror?
Answer: At the focus behind the mirror - What is the nature of the image when an object is placed at the pole of a concave mirror?
Answer: Virtual, erect, and same size - What type of mirror is used in a periscope?
Answer: Plane mirror - What is the radius of curvature of a mirror with a focal length of 20 cm?
Answer: 40 cm - What is the focal length of a mirror with a radius of curvature of 50 cm?
Answer: 25 cm - What type of mirror can produce a laterally inverted image?
Answer: All mirrors (plane, concave, and convex) can produce laterally inverted images. - What is the nature of the image when an object is placed at 2f of a concave mirror?
Answer: Real, inverted, and same size - What is the sign convention for the height of an object measured upward from the principal axis?
Answer: Positive - What is the sign convention for the height of an image measured downward from the principal axis?
Answer: Negative - What type of mirror is used in a makeup mirror to get a magnified image?
Answer: Concave mirror - What is the position of the image when an object is placed at the focus of a convex mirror?
Answer: Behind the mirror, virtual, and diminished - What is the effect of a broken mirror on its focal length?
Answer: No change - What is the image distance if an object is placed 25 cm from a concave mirror with a focal length of 15 cm?
Answer: 37.5 cm - What is the nature of the image when an object is placed between infinity and the center of curvature of a concave mirror?
Answer: Real, inverted, and diminished - What type of mirror is used in a security mirror at road junctions?
Answer: Convex mirror - What is the angle of reflection for a ray incident at 45° on a concave mirror?
Answer: 45° - What is the nature of the image formed by a convex mirror when the object is at a finite distance?
Answer: Virtual, erect, and diminished - What is the purpose of using a convex mirror in shops?
Answer: To monitor large areas due to its wide field of view - What is the image size when an object is placed at the center of curvature of a concave mirror?
Answer: Same size as the object - What is the image distance for an object placed 10 cm from a plane mirror?
Answer: 10 cm behind the mirror - What type of mirror is used in a reflecting telescope?
Answer: Concave mirror - What happens to a ray passing through the focus of a concave mirror after reflection?
Answer: It becomes parallel to the principal axis. - What is the magnification when an object is placed at infinity in a concave mirror?
Answer: Zero (point-sized image) - What is the nature of the image when an object is placed at a distance equal to the radius of curvature of a concave mirror?
Answer: Real, inverted, and same size - What is the purpose of using a concave mirror in ENT head mirrors?
Answer: To focus light on a small area - What is the image position when an object is placed at 2f of a convex mirror?
Answer: Between the pole and focus, virtual, and diminished - What is the sign convention for the image distance of a virtual image in a concave mirror?
Answer: Positive - What is the effect of increasing the object distance on the image size in a concave mirror?
Answer: Image size decreases - What type of mirror is used in a kaleidoscope?
Answer: Plane mirror - What is the focal length of a convex mirror with a radius of curvature of 30 cm?
Answer: 15 cm - What is the nature of the image when an object is placed at the pole of a convex mirror?
Answer: Virtual, erect, and same size - What is the angle of incidence equal to in the law of reflection?
Answer: Angle of reflection - What type of mirror is used in a projector to focus light?
Answer: Concave mirror - What is the image distance when an object is placed at infinity in a concave mirror?
Answer: At the focus - What is the nature of the image when an object is placed just beyond the focus of a concave mirror?
Answer: Real, inverted, and magnified - What is the purpose of using a convex mirror in ATMs?
Answer: To provide a wide field of view for security - What is the magnification when an object is placed between the focus and pole of a concave mirror?
Answer: Greater than 1 (magnified) - What is the image position when an object is placed at 3f of a concave mirror?
Answer: Between f and 2f, real, inverted, and diminished - What type of mirror is used in a solar concentrator?
Answer: Concave mirror - What happens to the image size as the object moves closer to a convex mirror?
Answer: Image size increases but remains diminished - What is the sign convention for the object distance in a spherical mirror?
Answer: Negative - What is the nature of the image when an object is placed at a distance less than the focal length of a convex mirror?
Answer: Virtual, erect, and diminished - What is the purpose of using a concave mirror in a searchlight?
Answer: To produce a parallel beam of light - What is the image distance when an object is placed at 2f of a concave mirror?
Answer: At 2f - What type of mirror is used in a funhouse to create distorted images?
Answer: Curved mirrors (concave or convex) - What is the nature of the image when an object is placed at a distance equal to the focal length of a concave mirror?
Answer: Real, inverted, and at infinity - What is the effect of using a convex mirror as a rear-view mirror?
Answer: Provides a wider field of view but a smaller image - What is the image position when an object is placed at 1.5f of a concave mirror?
Answer: Beyond 2f, real, inverted, and magnified - What type of mirror is used in a reflecting microscope?
Answer: Concave mirror - What is the magnification when an object is placed at the center of curvature of a concave mirror?
Answer: -1 (same size, inverted) - What is the nature of the image when an object is placed at a large distance from a convex mirror?
Answer: Virtual, erect, and highly diminished - What is the purpose of using a plane mirror in an optical lever?
Answer: To reflect light for precise measurements - What is the image distance when an object is placed at 30 cm from a concave mirror with a focal length of 20 cm?
Answer: 60 cm - What type of mirror is used in a barber shop for close-up viewing?
Answer: Concave mirror - What is the nature of the image when an object is placed at 3f of a convex mirror?
Answer: Virtual, erect, and diminished - What is the effect of a concave mirror on parallel rays not parallel to the principal axis?
Answer: They converge at a point on the focal plane. - What is the image position when an object is placed at the focus of a convex mirror?
Answer: Behind the mirror, virtual, and diminished - What is the purpose of using a convex mirror in a traffic mirror?
Answer: To provide visibility around corners - What is the magnification when an object is placed at infinity in a convex mirror?
Answer: Zero (point-sized image) - What is the nature of the image when an object is placed at 1.5f of a convex mirror?
Answer: Virtual, erect, and diminished - What type of mirror is used in a heliostat to reflect sunlight?
Answer: Plane or concave mirror - What is the image distance when an object is placed at 40 cm from a concave mirror with a focal length of 20 cm?
Answer: 40 cm - What is the purpose of using a concave mirror in a laser system?
Answer: To focus the laser beam - What is the nature of the image when an object is placed at a distance less than the focal length of a concave mirror?
Answer: Virtual, erect, and magnified - What is the image position when an object is placed at 4f of a concave mirror?
Answer: Between f and 2f, real, inverted, and diminished - What type of mirror is used in a cosmetic mirror to get a magnified view?
Answer: Concave mirror - What is the effect of using a plane mirror as a rear-view mirror?
Answer: It provides a same-sized image but a limited field of view. - What is the image distance when an object is placed at 15 cm from a convex mirror with a focal length of 10 cm?
Answer: 6 cm behind the mirror - What is the nature of the image when an object is placed at 2f of a convex mirror?
Answer: Virtual, erect, and diminished
Conclusion
Mastering the concept of reflection of light at curved surfaces is crucial for students preparing for the Telangana SSC Physics examinations and other competitive exams. This collection of over 100 one-liner questions and answers provides a concise yet comprehensive resource to reinforce key concepts, from the properties of concave and convex mirrors to their real-world applications. By practicing these questions, students can enhance their understanding, improve time management, and boost confidence for their exams. Use this guide as a stepping stone to excel in your physics studies and achieve academic success.
Disclaimer
The information provided in this article is intended for educational purposes only and is based on the Telangana SSC Physics Textbook and credible online sources. While every effort has been made to ensure accuracy, students are advised to consult their textbooks and teachers for official exam preparation. The authors and publishers are not responsible for any errors or omissions in the content or for any consequences arising from its use.
Also Read: Reflection of Light Class 10 Quiz: 100+ One-Liner Questions and Answers