3.2. Light
A subsection of Physics, 0625, through 3. Waves
Listing 10 of 583 questions
A page of printed text is placed 18 cm from a converging lens of focal length 35 cm. is a scale diagram of the arrangement with each of the two principal focuses (focal points) of the lens labelled F. 18 cm page of printed text F F 5.0 cm 5.0 cm lens A length of 1.0 cm on the scale diagram represents an actual length of 5.0 cm. By drawing on , locate the image of the page produced by the lens and label it I. Using , determine the actual distance of image I from the lens. actual distance from lens = Converging lenses can be used as magnifying glasses. State whether the image produced when a lens is used as a magnifying glass is real or virtual. Explain why. Suggest how someone who is long-sighted may benefit from using a converging lens.
0625_w23_qp_41
THEORY
2023
Paper 4, Variant 1
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shows a road junction, a moving car and a stationary truck. The road has high walls on each side. X car truck The driver of the truck is at position X. The car moves around the corner. On , label a point Y on the road where the truck driver first sees the car. A plane mirror is placed at the road junction as shown in . car truck X Show how this mirror allows the driver of the truck to see the car when it is at the position shown in . The truck driver wears spectacles to correct long-sightedness. shows how a blurred image of an object O forms on the retina. Any effect of the cornea on the rays of light can be ignored. lens retina cornea O On , show how long-sightedness is corrected by: • adding a suitable lens in front of the eye • continuing the path of the three rays of light until they meet to form an image. lens retina O
0625_w23_qp_42
THEORY
2023
Paper 4, Variant 2
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A ray of white light is incident on a glass prism. It forms a spectrum that is visible on the screen. shows the arrangement. ray of white light narrow slit violet red screen Two of the colours in the visible spectrum are listed in the box below. Complete the box. List the five missing colours of the visible spectrum, in the correct order. red violet Electromagnetic radiation has many uses. Draw a line from each use to the type of radiation it requires. use type of radiation detecting an intruder at night communicating by satellite for a telephone detecting broken bones in the body radio waves infra-red gamma rays X-rays ultraviolet visible light microwaves The types of radiation listed in form the electromagnetic spectrum. amplitude frequency velocity Complete the sentence. Choose a word from the box. The position of each type of radiation in the electromagnetic spectrum depends on its .
0625_w18_qp_32
THEORY
2018
Paper 3, Variant 2
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Questions Discovered
583