Question
For refraction at a concave spherical surface (separating glass-air medium), the distance of the object should be greater than 'g' times the radius of curvature of the refracting surface for the image to be real, the value of 'z' is:
Asked in HTET TGT Science · 2025
Refraction and Reflection · Physics
Exam PYQ4 Options
Quick Revision
Light bends towards the normal when it enters a medium with a higher refractive index.
Correct AnswerCorrect option for this question
Learn Refraction and Reflection in 60 Seconds
This short lesson breaks down LASER & Optical Fibre into clear points for faster understanding and revision.
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 Refraction and Reflection 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.