Physics Teacher

Practice Questions – Mirror Formula & Magnification A. Conceptual Questions State the mirror formula. Write the meaning of each term. A concave mirror forms an image at infinity when the object is placed at a certain point. Where is the object placed? Why can a convex mirror never form a real image of an object? If the magnification produced by a mirror is +0.5 , identify the type of mirror and nature of the image. What does a magnification of –3 signify about the image? B. Numerical Questions An object is placed at a distance of 30 cm from a concave mirror of focal length 15 cm . Find the position and nature of the image. A convex mirror has a focal length of 20 cm . An object is placed at 30 cm in front of it. Find the position of the image and the magnification. An image is formed by a concave mirror at a distance of 24 cm from the mirror. If the object is placed at 12 cm and the image is real, find the focal length of the mirror. A concave mirror produces ...