Image formation and magnificationEdexcel A-Level Physics: Mind map

Exam questions on Image formation and magnification

1. A slide projector uses a thin converging lens of focal length 0.100 m. A slide, 24 mm wide, is placed 0.120 m from the lens on the principal axis, and a sharp image is formed on a distant screen.
   Calculate the width of the image on the screen.2 marks
2. A student uses a thin converging lens of focal length 0.060 m as a magnifying glass. She holds an insect specimen 2.0 mm long on the principal axis, 0.045 m from the lens, and views it through the lens from the other side.
   Calculate the length of the image of the specimen.2 marks
3. A camera lens of focal length 0.050 m is used to photograph a person who is 1.80 m tall and standing 4.0 m from the lens. The light-sensitive sensor is placed behind the lens at the position where a sharp image forms.
   Calculate the distance from the lens to the sensor.3 marks