In the spectrum of white light through the prism, which colour is seen at the top and why ?

Explanation

To answer the question about which color is seen at the top of the spectrum of white light when passed through a prism, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding White Light**: White light is composed of multiple colors, which can be separated into a spectrum when passed through a prism. The colors typically include red, orange, yellow, green, blue, indigo, and violet.

2. **Passing Light Through a Prism**: When white light enters a prism, it bends or refracts due to the change in medium (from air to glass). Each color bends at a different angle because they have different wavelengths.

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