sphouxay said:Homework Statement
A 2.0--cm tall object is placed in front of a mirror. A 1.0--cm tall upright image is formed behind the mirror, 165 cm from the object.
What is the focal length of the mirror?
Homework Equations
The Attempt at a Solution
I tried 37 cm, it was incorrect
Ray optics is a branch of optics that studies the behavior of light as it travels in a straight line, also known as a ray. It is used to understand the properties and characteristics of light and how it interacts with different materials, such as mirrors and lenses.
To find the focal length of a mirror, you can use the formula: f = r/2, where f is the focal length and r is the radius of curvature. This formula applies to both concave and convex mirrors. You can also find the focal length experimentally by measuring the distance between the mirror and the point where the image of an object is formed.
A concave mirror curves inward, causing light rays that strike it to converge at a point, known as the focal point. This type of mirror is used to magnify objects and form real images. A convex mirror, on the other hand, curves outward and causes light rays to diverge, making objects appear smaller. This type of mirror is commonly used in rear-view mirrors and security mirrors.
Yes, the focal length of a mirror can be changed by changing the curvature of the mirror's surface. For example, a concave mirror can have a shorter or longer focal length depending on how much it is curved. Additionally, the focal length can be changed by moving the object or the mirror itself.
The power of a mirror is inversely proportional to its focal length. This means that a mirror with a shorter focal length will have more power, while a mirror with a longer focal length will have less power. The unit of measurement for the power of a mirror is diopters (D).