An object is 10 cm from a convex mirror with a radius of curvature, r=-0.50cm. What is the focal length? What is the image distance? Is the image real or virtual? What is the magnification?

An object is placed 30 cm in front of a diverging mirror having a focal length of magnitude 20 cm. What is the image distance, in cm?  Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.

The figure shows an object and its image formed by a thin lens. Assume that d1 = 0.595 m, d2 = 0.784 m, and h = 7.50E-2 m. What is the image height (in m; answer sign and magnitude)?

You use a lens to form an image. The object is 50 cm from the lens and the image is formed at a position of -14 cm. What is the focal length of your lens? f = cm What is the magnification of the lens? m = Is the image formed real or virtual? --- Is the image upright or inverted? Are you using a converging lens or a diverging lens?

A convex mirror has a focal length of 40 cm. If you place a 10.0 cm height object at 60 cm from the mirror: Draw the image location using the ray tracing technique. What are the image characteristics in this case? What is the distance and height of the image?

Famous jeweler Gabi Tolkowsky is looking at a 3.0-cm-tall perfect oval-shaped diamond through a thin lens. The diamond is 20.0 cm behind the lens, and the distance between its upright image and the lens is 40.0 cm. What is the focal length of the lens? Is it converging or diverging? How tall is the image? 
 PLEASE PLEASE draw a ray diagram and define variables

A diverging lens has a focal distance of f=0.2 cm. If an object is placed 0.1cm away, What is the image distance? Is the image real or virtual? What is the magnification?

The radius of curvature of a spherical concave mirror is 16.0 cm. Describe the image formed when a 20.0-cm-tall object is 11.0 cm from the mirror. What is the image distance ?A, measured in centimeters (cm)? ?A= ?    cm What is the image height ℎA, measured in centimeters (cm)? ℎA= ?    cm   Describe the image formed when a 20.0-cm-tall20.0-cm-tall object is 16.0 cm from the mirror. What is the image distance ?B, measured in centimeters (cm)? ?B= ?  cm What is the image height ℎB, measured in centimeters (cm)? ℎB= ?  cm   Describe the image formed when a 20.0-cm-tall object is 80.0 cm from the mirror. What is the image distance ?C, measured in centimeters (cm)? ?C= ?  cm What is the image height ℎC, measured in centimeters (cm)? ℎC= ?  cm

Please help me with this question.

A 3.0 cm tall object is positioned 15.5 cm from a converging lens.  The focal length of the lens is 10.5 cm. What is the distance to the image? What is the magnification of the image? What is the height of the image? Is the image real or virtual? Is the image inverted or upright?