1. Find the focal length of a convex mirror of radius of curvature 1m. 2. Focal length of a convex mirror is 50 cm. What is its radius of curvature? 3. Radius of curvature of a concave mirror is 25 cm. What is its focal length? 4. A concave mirror produces 10 cm long image of an object of height of 2cm. What is the magnification produced? 5. An object 1 cm high is held near a concave mirror of magnification 10. How tall will be the image? 6. An object 4 cm in size is placed at a distance of 25 cm from a concave mirror of focal length 15 cm. Find the position, nature and height of the image. 7. A converging mirror forms a real image of height 4 cm, of an object of height 1 cm placed 20 cm away from the mirror. Calculate the image distance. What is the focal length of the mirror? 8. A 4.5 cm needle is placed 12 cm away from a convex mirror of focal length 15 cm. Give the location of the image and the magnification. Describe what happens as the needle is moved farther from the mirror.