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An image formed by a ______ mirror is always of the same size as that of the object.
A virtual image larger than the object can be produced by a ______.
A ray of light is incident normally on a plane mirror. What will be the:
- angle of incidence?
- angle of reflection?
Write the mirror formula. Give the meaning of each symbol which occurs in it.
- A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
- Copy the figure below and draw rays to show how an image is formed by the lens.
- Calculate the distance of the image from the lens by using the lens formula.
- Copy the figure below and draw rays to show how an image is formed by the lens.
- The diverging lens in part (a) is replaced by a converging lens also of focal length 100 mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
A ray of light travels from a denser medium to a rarer medium. How will it bend?
The diagram below in Figure, shows a convex mirror. C is its centre of curvature and F is its focus. (i) Draw two rays from A and hence locate the position of image of object OA. Label the image IB. (ii) State three characteristics of the image.
A straight stick partly dipped in water obliquely appears to be bent at the surface of the water.
What is the relationship between the focal length and radius of curvature?
Define the following terms in the context of a diverging mirror:
- Principal focus
- Focal length
Draw a labelled ray diagram to illustrate your answer.
