Subsection 3.3. Electromagnetic spectrum for Physics, IGCSE - revisedeck

3.3. Electromagnetic spectrum

A subsection of Physics, 0625, through 3. Waves

Listing 10 of 141 questions

shows the parts of the electromagnetic spectrum. Name one type of radiation that has a higher frequency than ultra-violet, a longer wavelength than visible light. Some γ-rays emitted from a radioactive source have a speed in air of 3.0 x 108m/s and a wavelength of 1.0 x 10–12m. Calculate the frequency of the γ-rays. frequency = ………………. State the approximate speed of infra-red waves in air. γ - rays and X - rays ultra- violet infra- red radio waves v i s i b l e

0625_s05_qp_3

THEORY

2005

Paper 3, Variant 0

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Remote controllers for television sets send a beam of electromagnetic radiation to the television. Which region of the electromagnetic spectrum is used? Tick one box. microwaves infra-red visible ultra-violet X-rays Modern warfare often uses heat-seeking missiles. Which region of the electromagnetic spectrum is used? Tick one box. microwaves infra-red visible ultra-violet X-rays Injured legs may be checked for possible fractures using electromagnetic radiation. Which region of the electromagnetic spectrum is used? Tick one box. microwaves infra-red visible ultra-violet X-rays Mobile phones communicate using electromagnetic radiation. Which region of the electromagnetic spectrum is used? Tick one box. microwaves infra-red visible ultra-violet X-rays

0625_s12_qp_21

THEORY

2012

Paper 2, Variant 1

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Different parts of the electromagnetic spectrum are used for different purposes. Below are four statements about parts of the spectrum. statement 1: Infra-red waves are used in television remote controllers. statement 2: Radio waves are used to transmit television pictures from satellites to Earth. statement 3: Ultra-violet waves are used for intruder alarms. statement 4: X-rays are used for security checks. Which statements are correct?

0625_s13_qp_11

MCQ

2013

Paper 1, Variant 1

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Different parts of the electromagnetic spectrum are used for different purposes. Below are four statements about parts of the spectrum. statement 1: Infra-red waves are used in television remote controllers. statement 2: Radio waves are used to transmit television pictures from satellites to Earth. statement 3: Ultra-violet waves are used for intruder alarms. statement 4: X-rays are used for security checks. Which statements are correct?

0625_s13_qp_13

MCQ

2013

Paper 1, Variant 3

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The diagram shows the electromagnetic spectrum, in order of increasing wavelength. Three types of radiation, P, Q and R, are missing from the spectrum diagram. γ-rays X-rays P visible light Q microwaves R Which types of electromagnetic radiation are represented by P, by Q and by R?

0625_s15_qp_11

MCQ

2015

Paper 1, Variant 1

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represents the electromagnetic spectrum. visible light radio waves X-rays ultra- violet a-rays Identify one feature that is the same for all radiations that form the electromagnetic spectrum. Fill in the blank spaces between visible light and radio waves by adding the names of the radiations. State the radiation that has the shortest wavelength. Describe a common use of X-rays. State a precaution taken by those who work with X-rays.

0625_s15_qp_21

THEORY

2015

Paper 2, Variant 1

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A student arranges two 45° prisms as shown in . He aims a ray of red light to hit the surface of one of the prisms at 90°. 45° 45° 45° 45° ray of red light The critical angle for the glass is 42 °. On , draw the path of the light through the prisms. Visible light is one region of the electromagnetic spectrum, as represented in . radio waves microwaves infra-red waves visible light ultraviolet waves long wavelength short wavelength Two regions of the electromagnetic spectrum are missing from . State the name of the missing region with the longer wavelength. An infra-red sensor is fitted into a room as part of an intruder alarm system. Explain how the sensor detects a person in the room. State two properties that are the same for all electromagnetic waves. 1. 2.

0625_s15_qp_22

THEORY

2015

Paper 2, Variant 2

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shows the regions of the electromagnetic spectrum. Two regions have not been named. gamma rays ultraviolet rays visible light infra-red waves radio waves Complete by labelling the two regions that have not been named. On , circle the region with the longest wavelength. Suggest a use for gamma radiation. Suggest a use for ultraviolet radiation.

0625_s16_qp_32

THEORY

2016

Paper 3, Variant 2

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shows the regions of the electromagnetic spectrum. Two regions have not been named. gamma rays ultraviolet rays visible light infra-red waves radio waves Complete by labelling the two regions that have not been named. On , circle the region with the longest wavelength. Suggest a use for gamma radiation. Suggest a use for ultraviolet radiation.

0625_s16_qp_33

THEORY

2016

Paper 3, Variant 3

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This question is about the electromagnetic spectrum. shows labels for parts of the electromagnetic spectrum, in order. radio waves microwaves visible light gamma rays infra-red radiation Complete by adding the two missing labels. State a use of infra-red radiation. Describe the harmful effect of microwaves on people.

0625_s17_qp_31

THEORY

2017

Paper 3, Variant 1

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Questions Discovered

141