Question

a concave mirror is often used as a magnified mirror because it: magnifies the image to show more detail. produces an inverted image. provides a wide field of view. produces a real image. if the index of refraction of diamond is approximately 2.42, this means that the speed of light in diamond is: 2.42 times slower than the speed of light in a vacuum. twice the speed of light in a vacuum. equal to the speed of light in a vacuum. 2.42 times faster than the speed of light in a vacuum.

Explanation:

First question:

A concave mirror can magnify the image when the object is placed within its focal length. This allows for seeing more detail. Inverted and real images (formed when object is beyond focal length) are not for magnification purpose. A wide - field of view is a property of convex mirrors.

The refractive index \(n=\frac{c}{v}\), where \(c\) is the speed of light in vacuum (\(c = 3\times10^{8}\ m/s\)) and \(v\) is the speed of light in the medium. If \(n = 2.42\), then \(v=\frac{c}{n}\). So the speed of light in diamond is slower than in vacuum.

Answer:

Magnifies the image to show more detail.

Second question: