Question 10

1. A blue object is illuminated with blue light and viewed through a yellow filter. State the colour of the object as seen through the filter. Explain your answer

The diagram above illustrates an object placed at O, between C anf F on the principal axis of a concave mirror.

1. Copy the diagram into the space below.
2. On your diagram, draw rays to show the image formed.
3. State the characteristics of the images.
4. A mirror of focal length 20.0 cm produces an image 40.0 cm behind the mirror. Calculate the object distance from the mirror.
5. The focal lengths of the objective and eyepiece lenses of an astronomical telescope, in normal adjustment, are 50 cm and 20 cm respectively. Determine the separation of the lenses.