Question
According to the Cartesian sign convention, the object distance (u) is taken as:
Asked in RRB ALP CBT 1 · 2026
Mirror · Physics
Exam PYQ4 Options
Quick Revision
The angle of incidence equals the angle of reflection for a plane mirror.
Correct AnswerCorrect option for this question
Learn Mirror in 60 Seconds
A quick visual lesson on LASER & Optical Fibre to help connect the concept with common objective-question patterns.
Everything you need to learn, practice & excel — in one place.
3,000+ Video-Based Study Material
PYQ-Based Quizzes
4,000+ Informative Audiobooks
6,300+ Full-Length Mock Tests
Daily Current Affairs
40,000+ PYQs
Questions Asked from LASER & Optical Fibre in Previous Exams
See how often LASER & Optical Fibre has appeared in previous-year questions across major government exams.
9UPSC Questions Asked in These Years:2010, 2011, 2012, 2013, 2019, 2021, 2022, 2023, 2024
9SSC Questions Asked in These Years:2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
7Railways Questions Asked in These Years:2016, 2018, 2021, 2022, 2024, 2025, 2026
15State PSC Questions Asked in These Years:2002, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025
LASER & Optical Fibre has appeared in 40 previous-year exam questions, most frequently in State PSC, UPSC and SSC.
2-Minute Revision Notes
Revise Mirror and Its Related Concepts
Strengthen key concepts with exam-focused visual notes for faster revision.
Explore More Questions
Continue practising by chapter, topic and related subjects.
One question solved. Keep going.
Continue with the next Optics question and build your accuracy one question at a time.