Question 10
- 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.
- Copy the diagram into the space below.
- On your diagram, draw rays to show the image formed.
- State the characteristics of the images.
- A mirror of focal length 20.0 cm produces an image 40.0 cm behind the mirror. Calculate the object distance from the mirror.
- 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.
Observation