The medium on both sides of a convex lens is same. A light ray (I) is incident on it as shown. Draw the path of the ray after it emerges from the lens. Write each step of your construction. The focal length of the lens is known.

Graph of position of image vs position of point object from a convex lens is shown. Then, focal length of the lens is

A ray of light is going towards the focus of a convex lens. Draw a ray digram to show the path of this ray of light after refraction through the lens.

In the figure, light is incident on a thin lens as shown. The radius of curvature for both the surfaces is R. Determine the focal length of this system.

From the ray diagram shown below, calculate the focal length of the other convex lens.

A ray of light is incident on a convex mirror as shown in Fig. Redraw the above diagram after completing the path of the light ray after reflection from the mirror.

Draw ray diagram showing the image formation by a convex lens when an object is placed at twice the focal length of the lens.

The distance between a convex lens and a plane mirror is 10 cm. The parallel rays incident on the convex lens after reflection from the mirror forms image at the potical centre of the lens. Focal length of lens will be

A convex lens is used to focus the rays from the far off light bulb at a distance of one meter from the lens. What should be the focal length of the lens ? Draw a ray diagram to show the formation of image.

Draw ray diagram showing the image formation by a convex lens when an object is placed between focus and twice the focal length of the lens.

An arrangement of a concave and a convex lens is shown below. The focal length of the convex lens is 30 cm. Parallel rays coming from a distant source are focused on the screen after passing through the lenses. Calculate the focal length of the concave lens.