Class 10 Exam  >  Class 10 Questions  >  A plane mirror and a concave mirror face each... Start Learning for Free
A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is?
Most Upvoted Answer
A plane mirror and a concave mirror face each other and are separated ...
Calculating the Focal Length of the Concave Mirror
1. Given Data
- Distance between the plane mirror and concave mirror = 20 cm
- Object placed at the midpoint of the mirrors
- Virtual image formed by the plane mirror acts as an object for the concave mirror
- Final image formed by the concave mirror coincides with the original object
2. Analysis
- Since the final image coincides with the original object, the object distance for the concave mirror is also 20 cm
- The object distance is equal to the focal length for a concave mirror when the image is formed at infinity
3. Using Mirror Formula
- 1/f = 1/v + 1/u
- For the concave mirror, since the image coincides with the object, the image distance (v) is equal to the object distance (u) which is 20 cm
4. Calculations
- 1/f = 1/20 + 1/20
- 1/f = 2/20
- 1/f = 1/10
- f = 10 cm
5. Conclusion
- The focal length of the concave mirror is 10 cm
Attention Class 10 Students!
To make sure you are not studying endlessly, EduRev has designed Class 10 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 10.
Explore Courses for Class 10 exam

Top Courses for Class 10

A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is?
Question Description
A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is? for Class 10 2024 is part of Class 10 preparation. The Question and answers have been prepared according to the Class 10 exam syllabus. Information about A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is? covers all topics & solutions for Class 10 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is?.
Solutions for A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is? in English & in Hindi are available as part of our courses for Class 10. Download more important topics, notes, lectures and mock test series for Class 10 Exam by signing up for free.
Here you can find the meaning of A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is? defined & explained in the simplest way possible. Besides giving the explanation of A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is?, a detailed solution for A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is? has been provided alongside types of A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is? theory, EduRev gives you an ample number of questions to practice A plane mirror and a concave mirror face each other and are separated by a distance of 20cm. An object is placed at the mid point of two mirror . the virtual image formed by the plane mirror acts as an object for a concave mirror . the final image formed by the concave mirror is at the mid point of two mirror and coincides with the original object. the focal length of convene mirror is? tests, examples and also practice Class 10 tests.
Explore Courses for Class 10 exam

Top Courses for Class 10

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev