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Questions and Answers
Where is the principal focus F located for a spherical mirror of small aperture?
Where is the principal focus F located for a spherical mirror of small aperture?
- At the pole P
- At a distance equal to the focal length from the pole P
- At the centre of curvature C
- Mid-way between the pole P and the centre of curvature C (correct)
In the activity described in the text, what is the object used to obtain the image on the paper screen?
In the activity described in the text, what is the object used to obtain the image on the paper screen?
- A lens
- A burning candle (correct)
- A concave mirror
- A piece of paper
What should be done if an image is not obtained on the paper screen in the activity described in the text?
What should be done if an image is not obtained on the paper screen in the activity described in the text?
- Increase the distance between the object and the mirror
- Decrease the distance between the object and the mirror
- Repeat the activity with a different object
- Identify the position of the object and look for its virtual image in the mirror itself (correct)
