Secondary colours are formed by :

Question

Accepted Answer

Secondary colours are formed by mixing two primary colours. This is the correct answer, as indicated by Option 4. Let's delve into the explanation:

1. **Explanation for Option 4 (Correct Answer):**
   - Primary colours are the basic colours that cannot be created by mixing other colours. In the traditional colour wheel, the primary colours are red, blue, and yellow.
   - Secondary colours are created by mixing two primary colours in equal parts. For example:
     - Mixing red and blue results in purple.
     - Mixing blue and yellow results in green.
     - Mixing yellow and red results in orange.
   - Therefore, secondary colours are indeed formed by the combination of two primary colours, which supports Option 4 as the correct answer.

2. **Explanation for why other options are incorrect:**

- **Option 1: Mixing one primary colour with one secondary colour**
     - Mixing a primary colour with a secondary colour results in a tertiary colour, not a secondary colour. Tertiary colours are formed by mixing a primary colour with an adjacent secondary colour on the colour wheel.

- **Option 2: Mixing one tertiary colour with one primary colour**
     - This combination also results in a different shade or tone, not a secondary colour. Tertiary colours are already a mix of primary and secondary colours, so adding a primary colour would not yield a secondary colour.

- **Option 3: Mixing two tertiary colours**
     - Mixing two tertiary colours results in a more complex colour, often a muted or neutral tone, rather than a secondary colour. Tertiary colours are more advanced mixtures and do not revert to secondary colours when combined.

In conclusion, Option 4 is the correct answer because secondary colours are specifically formed by mixing two primary colours, as explained above.