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CBSE Class 12 Physics Reflection from Plane Surfaces Solved Examples. Please refer to the examination notes which you can use for preparing and revising for exams. These notes will help you to revise the concepts quickly and get good marks.
Ex1. Find the minimum height of a mirror required to see the complete wall behind him.
Ex.3 Two plane mirrors are inclined at an angle θ. A ray of light is incident on one mirror at an angle of incidence i. The ray is reflected from this mirror, falls on the second mirror from where it is reflected parallel to the first mirror. What is the value of i, the angle of incidence
in terms of θ ?
Ex.4 Two plane mirrors are inclined at an angle of 30º. Then the first four images of an object O placed between the two mirrors are correctly represented by
Sol. The image of object O from mirrror M1 is I1 and the image of I1 (the vitual object) from mirror M2 is I3. The image of object O from mirror M2 is I2 and the image of I2 (the virtual object) from mirror M1 is I4. Notice that this interpretation, according to ray diagram rules, is valid only for Fig. (A). All others are
inconsistent. Hence correct is (A)
Ex.5 Two plane mirrors are placed at an angle θ so that a ray parallel to one mirror gets reflected parallel to the second mirror after two consecutive reflections. The value of θ will be
(A) 30º (B) 60º (C) 75º (D) 90º
Sol. As shown in figure, ray AB goes to mirror M1, gets reflected and travels along BC and then gets reflected by M2 and goes in CD direction. If the angle between M1 and M2 be α, then
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Useful Resources and Notes for Class 12 Physics Reflection from Plane Surfaces
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Our advanced study package for Reflection from Plane Surfaces includes detailed concepts, diagrams, Mind Maps, and explanation of complex topics to ensure Class 12 students learn as per syllabus for 2026 exams.
The Mind Maps provided for Reflection from Plane Surfaces act as visual anchors which will help faster recall during high-pressure exams.
Yes, teachers use our Class 12 Physics resources for lesson planning as they are in simple language and have lot of solved examples.
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Yes, our subject matter experts have updated the Reflection from Plane Surfaces material to align with the rationalized NCERT textbooks and have removed deleted topics and added new competency-based questions.