Question: The focal length for red light that strikes a spherical concave lens is -15 cm. Referring to Figure 27-26, will the magnitude of the (negative)

The focal length for red light that strikes a spherical concave lens is -15 cm. Referring to Figure 27-26, will the magnitude of the (negative) focal length for blue light be greater than, less than, or equal to 15 cm?
In figure 27-26

A lens bends blue light more than red light.

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