Electromagnetic spectrum — Paper 1 · IGCSE Physics (9-1) 0972

25 The diagram shows the electromagnetic spectrum. The numbers indicate the approximate wavelength at the boundaries between the various regions of the spectrum. For a device to be able to make use of electromagnetic radiation, it needs an aerial of approximately the same size as the radiation it is designed to work with. P Q R S T U V 1 m 10–3 m 7 × 10–7 m 4 × 10–7 m 10–8 m 10–11 m Which statement is correct? A A mobile phone uses radiation from region P. B A television satellite dish uses radiation from region Q. C The receptor cells in an eye use radiation from region R. D The remote controller for a television uses radiation from region U.

1 marks

Answer: B

This question in 0972/11 May/June 2018

25 The diagram shows radiation from a lamp passing through a prism. screen prism P red light radiation from lamp Which type of radiation is found at P? A γ-rays B infrared C ultraviolet D X-rays

1 marks

Answer: B

This question in 0972/11 May/June 2019

25 The diagram shows the electromagnetic spectrum. radio γ-rays X-rays ultraviolet visible light infrared microwaves waves increasing … A word is missing from the label below the spectrum. Which word is missing? A amplitude B frequency C speed D wavelength

1 marks

Answer: D

This question in 0972/11 Oct/Nov 2019

24 A narrow beam of white light passes through a prism and is dispersed into a spectrum. 1 white 2 light 3 Which row is correct? colour 1 colour 2 colour 3 A blue yellow red B red blue yellow C red yellow blue D yellow blue red

1 marks

Answer: C

This question in 0972/11 May/June 2020

25 An intruder alarm sensor detects that a person is warmer than his surroundings. Which type of electromagnetic wave does the sensor detect? A infrared B radio C ultraviolet D visible light

1 marks

Answer: A

This question in 0972/11 May/June 2020

25 An intruder alarm sensor detects that a person is warmer than his surroundings. Which type of electromagnetic wave does the sensor detect? A infrared B radio C ultraviolet D visible light

1 marks

Answer: A

This question in 0972/12 May/June 2020

24 The diagram shows a beam of white light passing through a triangular prism. A spectrum is produced. prism X white light Y Which row correctly shows a wave property involved in producing the colours at X and Y? wave property X Y A diffraction red violet B dispersion red violet C reflection violet red D refraction violet red

1 marks

Answer: B

This question in 0972/11 Oct/Nov 2020

25 The diagram shows the electromagnetic spectrum. -rays E ultraviolet F infrared microwaves G Which types of wave are E, F and G? E F G A radio visible light X-rays B radio X-rays ultrasound C X-rays radio ultrasound D X-rays visible light radio

1 marks

Answer: D

This question in 0972/11 Oct/Nov 2020

22 Radiation from which part of the electromagnetic spectrum is used in the remote controller for a television? A infrared waves B microwaves C radio waves D ultraviolet waves

1 marks

Answer: A

This question in 0972/11 Oct/Nov 2021

23 Two rays of light are different colours. Which row is correct? speed of the two wavelengths of the two colours in a vacuum colours in a vacuum A different different B different the same C the same different D the same the same

1 marks

Answer: C

This question in 0972/11 Oct/Nov 2021

24 Which part of the electromagnetic spectrum is used by a remote controller for a television? A infrared waves B microwaves C radio waves D visible light

1 marks

Answer: A

This question in 0972/11 May/June 2022

25 Which statement correctly compares radio waves and X-rays? A Radio waves have a longer wavelength and a greater speed in a vacuum. B Radio waves have a longer wavelength and the same speed in a vacuum. C Radio waves have a shorter wavelength and a greater speed in a vacuum. D Radio waves have a shorter wavelength and the same speed in a vacuum.

1 marks

Answer: B

This question in 0972/11 May/June 2022

24 Microwaves, green light and infrared are three types of electromagnetic radiation. What is their order when listed by wavelength from the shortest wavelength to the longest? A green light  infrared  microwaves B green light  microwaves  infrared C infrared  green light  microwaves D microwaves  infrared  green light

1 marks

Answer: A

This question in 0972/12 May/June 2022

25 Which statement correctly compares radio waves and X-rays? A Radio waves have a longer wavelength and a greater speed in a vacuum. B Radio waves have a longer wavelength and the same speed in a vacuum. C Radio waves have a shorter wavelength and a greater speed in a vacuum. D Radio waves have a shorter wavelength and the same speed in a vacuum.

1 marks

Answer: B

This question in 0972/12 May/June 2022

20 Which diagram shows the dispersion of white light by a glass prism? A B red red red white white violet violet violet C D red red red red white violet violet white violet violet

1 marks

Answer: B

This question in 0972/11 May/June 2023

21 Which statement is correct? A A remote controller emits microwave radiation. B A remote controller emits infrared radiation. C A remote controller emits ultrasound. D A remote controller emits ultraviolet radiation.

1 marks

Answer: B

This question in 0972/11 May/June 2023

21 The two devices shown use different types of electromagnetic waves. medical scanning remote controller Which types of waves are used in these devices? medical remote scanning controller A ultraviolet infrared B ultraviolet microwaves C X-rays infrared D X-rays microwaves

1 marks

Answer: C

This question in 0972/12 May/June 2023

39 The graph shows the energy radiated by the Sun at different wavelengths. Most of the energy is radiated in just three parts of the electromagnetic spectrum, labelled P, Q and R. energy radiated 0 0 P Q R wavelength Which parts of the electromagnetic spectrum are P and R? P R A gamma ray radio B infrared ultraviolet C radio gamma ray D ultraviolet infrared

1 marks

Answer: D

This question in 0972/12 May/June 2023

22 Where do all types of electromagnetic waves travel at the same speed? A air B a vacuum C glass D water

1 marks

Answer: B

This question in 0972/11 Oct/Nov 2023

20 Red light of frequency 430  1012 Hz has a wavelength of 700  10–9 m. What is possible for blue light? A a frequency of 190  1012 Hz and a wavelength of 450  10–9 m B a frequency of 190  1012 Hz and a wavelength of 950  10–9 m C a frequency of 670  1012 Hz and a wavelength of 450  10–9 m D a frequency of 670  1012 Hz and a wavelength of 950  10–9 m

1 marks

Answer: C

This question in 0972/11 May/June 2024

21 Infrared is a useful type of electromagnetic radiation. However, excessive exposure to infrared can cause harmful effects. Which row gives a use and a harmful effect for infrared? use harmful effect A detection of cancer mutations B intruder alarms skin burns C detection of fake bank notes cell damage D thermal imaging internal heating of body cells

1 marks

Answer: B

This question in 0972/11 May/June 2024

39 What are the three main types of radiation emitted by the Sun? A infrared, radio waves and ultraviolet B infrared, visible light and ultraviolet C microwaves, visible light and X-rays D radio waves, X-rays and ultraviolet

1 marks

Answer: B

This question in 0972/11 May/June 2024

15 Thermal radiation is emitted from all objects. Which mediums can thermal radiation travel through? glass water air vacuum A Jv J J J B JV Jv Jv x Cc x J J J D x x x J key ¥ = can travel through this medium X = cannot travel through this medium

1 marks

Answer: A

This question in 0972/12 May/June 2024

21 Excessive exposure to some regions of the electromagnetic spectrum can cause harmful effects to people. Which regions cause mutation of cells in the body, skin burns and internal heating of body cells? internal heating mutation of cells skin burns of body cells A radio waves infrared visible light B radio waves ultraviolet microwaves C X-rays infrared microwaves D X-rays ultraviolet visible light

1 marks

Answer: C

This question in 0972/12 May/June 2024

21 Which diagram shows the dispersion of white light by a glass prism? A B red violet red white violet white light light C D red red white violet white violet light light

1 marks

Answer: A

This question in 0972/11 Oct/Nov 2024

22 Which regions of the electromagnetic spectrum are used for satellite television and for security marking? satellite television security marking A microwaves infrared B microwaves ultraviolet C X-rays infrared D X-rays ultraviolet

1 marks

Answer: B

This question in 0972/11 Oct/Nov 2024

39 Electromagnetic radiation from distant galaxies is redshifted when observed from the Earth. This is evidence that supports the Big Bang Theory. Which statement is correct? A Light from galaxies that are moving towards the Earth is redshifted. B Redshift is an increase in the wavelength of electromagnetic radiation. C The Big Bang Theory says that the Solar System is expanding out into the Universe. D The Big Bang Theory says that, billions of years ago, the Universe expanded to its current size in a few seconds.

1 marks

Answer: B

This question in 0972/11 May/June 2025

21 Which type of radiation does a remote controller use to send its instructions to a television (TV)? A gamma rays B infrared radiation C ultraviolet radiation D X-rays

1 marks

Answer: B

This question in 0972/12 May/June 2025

22 A person exposed to excessive radiation from certain parts of the electromagnetic spectrum is likely to suffer cell damage. Which radiations cause cell damage? A gamma rays and ultraviolet B gamma rays only C green light and red light D radio waves and green light

1 marks

Answer: A

This question in 0972/12 May/June 2025

36 A student compares alpha emissions, beta emissions and gamma emissions. Which statement is correct? A Alpha emissions are the most ionising. B Beta emissions are the most penetrating. C Beta emissions are part of the electromagnetic spectrum. D Gamma emissions are streams of charged particles.

1 marks

Answer: A

This question in 0972/12 May/June 2025

40 The Sun radiates most of its energy in three regions of the electromagnetic spectrum. The diagram shows the proportion of the total energy radiated in each of these regions. Q R P Region P is visible light and region Q is ultraviolet. What is region R? A infrared B microwaves C radio waves D X-rays

1 marks

Answer: A

This question in 0972/12 May/June 2025