Question
When white light is incident obliquely on a glass prism, which of the following statement(s) is/are NOT true?
(i) Red colour undergoes minimum deviation.
(ii) The speed of violet colour is the least while travelling through the prism.
(iii) Refractive index of green colour is more than the violet colour.
(iv) Refractive index of red colour is more than blue colour.
Asked in RRB Technician Grade III · 2026
Natural Phenomenon · Physics
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Light bends towards the normal when it enters a medium with a higher refractive index.
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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.
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