A concave mirror with a radius R creates a virtual image that is 4 times the size of the object. Relative to the mirror, where is the object and where is the image in terms of multiples of R?

An ant is 9.9 cm tall and stands 6.9 cm in front of an unknown mirror. To its surprise, the ant sees its image which is 8.6 cm tall, standing upright! What is the the distance to the image?

An object is placed 30 cm in front of a converging 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.   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.   When an object is 20 cm in front of a spherical mirror, the image is 12 cm behind the mirror. What is the focal length of the mirror, in cm? Your answer needs to have 2 significant figures, including the negative sign in your answer if…

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