📚 CBSE Grade-10 Study Guide
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Science (086) — AI-generated practice question

AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.

Q1. [1] straightforward exam-ready
The correct sequence of colours in the spectrum of white light from the least deviated to the most deviated is:
  1. A Violet, Indigo, Blue, Green, Yellow, Orange, Red
  2. B Red, Orange, Yellow, Green, Blue, Indigo, Violet
  3. C Red, Green, Violet, Yellow, Orange, Indigo, Blue
  4. D Violet, Blue, Green, Red, Orange, Yellow, Indigo
Generated by claude-sonnet-4-6 · 2026-06-26 01:07 · grounding rag
Model Answer

The correct answer is (B) Red, Orange, Yellow, Green, Blue, Indigo, Violet.

Red light bends the least and violet bends the most while passing through a prism, so the sequence from least to most deviated follows ROYGBIV.

Source: Chapter 10, Section 10.4 – Dispersion of White Light by a Glass Prism

Explanation

The textbook clearly states: "The red light bends the least while the violet the most." The acronym VIBGYOR gives the spectrum order from violet to red (most to least deviated), so reversing it gives the order from least to most deviated: Red, Orange, Yellow, Green, Blue, Indigo, Violet — option B. Don't confuse VIBGYOR (spectrum order on screen) with the order of deviation.

Previous-year CBSE Grade 10 board exam questions, organised by subject and chapter, each with a model answer — free to read and print.