The refractive indices for violet, yellow and red colours for a flint glass prism are 1.634, 1.623 and 1.616. Calculate the dispersive power of the prism material.

Explanation

To calculate the dispersive power of the prism material, we can follow these steps:

### Step 1: Understand the formula for dispersive power
The dispersive power (ω) of a prism material is defined as:
\[ \omega = \frac{\mu_v - \mu_r}{\mu_y - 1} \]
where:
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