Draw a labelled ray diagram to show the formation of image of an object by a convex mirror. Mark clearly the pole, focus and centre of curvature on the diagram.

1. Find the nature, position and magnification of the images formed by a convex lens of focal length 0.20 m if the object is placed at a distance of:

1. 0.50m
2. 0.25m
3. 0.15m

2. Which of the above cases represents the use of convex lens in a film projector, in a camera, and as a magnifying glass?

A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?

Your eye contains a convex lens. Why is it unwise to look at the sun?

It is desired to obtain an erect image of an object, using concave mirror of focal length of 12cm.
Will the image be smaller or larger than the object? Draw ray diagram to show the formation of image in this case.

The letter F is placed in front of a plane mirror:

1. How would its image look like when seen in a plane mirror?
2. What is the name of the phenomenon involved?

Show the lateral displacement of the ray on the diagram.

State any four characteristics of the image of an object formed by a plane mirror.

Three convex lenses are available having focal lengths of 4cm, 40cm and 4m respectively. Which one would you choose as a magnifying glass and why?

The diagram given alongside shows a ray of light entering a rectangular block of glass:

1. Copy the diagram and draw the normal at the point of entry.
2. Draw the approximate path of the ray of light through the glass block and out of the other side.