Polarisation — Paper 1 · A Level Physics 9702

22 Polarisation is a phenomenon associated with a certain type of wave. Which condition must be fulfilled if a wave is to be polarised? A It must be a light wave. B It must be a longitudinal wave. C It must be a radio wave. D It must be a transverse wave.

1 marks

Answer: D

This question in 9702/11 Oct/Nov 2005

23 Which phenomenon is associated with transverse waves but not longitudinal waves? A polarisation B reflection C refraction D superposition

1 marks

Answer: A

This question in 9702/11 May/June 2006

21 Which of the following types of wave can be polarised? A a longitudinal progressive wave B a longitudinal stationary wave C a transverse stationary wave D a transverse sound wave

1 marks

Answer: C

This question in 9702/11 May/June 2007

25 Light can exhibit all of the properties listed. Which property can sound not exhibit? A interference B polarisation C refraction D total internal reflection

1 marks

Answer: B

This question in 9702/11 Oct/Nov 2008

24 When plane-polarised light of amplitude a is passed through a polarising filter as shown, the amplitude of the light emerging is a cosθ. amplitude = a intensity = I θ plane polarised light amplitude = a cos θ polarising filter The intensity of the initial beam is I. What is the intensity of the emerging light when θ is 60.0°? A 0.250 I B 0.500 I C 0.750 I D 0.866 I

1 marks

Answer: A

This question in 9702/13 Oct/Nov 2010

27 If a wave can be polarised, it must be A a longitudinal wave. B an electromagnetic wave. C a sound wave. D a transverse wave. Space for working

1 marks

Answer: D

This question in 9702/12 May/June 2011

24 A wave that can be polarised must be A longitudinal. B progressive. C stationary. D transverse.

1 marks

Answer: D

This question in 9702/12 Oct/Nov 2011

26 What is correct for all transverse waves? A They are all electromagnetic. B They can all be polarised. C They can all travel through a vacuum. D They all involve the oscillation of atoms. Space for working

1 marks

Answer: B

This question in 9702/12 May/June 2013

25 When the liquid crystal display of a calculator is observed through a polarising film, the display changes as the film is rotated. Which property describes the radiation from the calculator display? A unpolarised B a longitudinal wave C a transverse wave D a wave with a 3 cm wavelength Space for working

1 marks

Answer: C

This question in 9702/13 May/June 2013

30 When plane-polarised light of amplitude A is passed through a polarising filter as shown, the amplitude of the light emerging is A cosθ. amplitude A intensity I θ plane-polarised light amplitude A cos θ polarising filter The intensity of the initial beam is I. What is the intensity of the emerging light when θ is 60.0°? A 0.250 I B 0.500 I C 0.750 I D 0.866 I Space for working

1 marks

Answer: A

This question in 9702/11 Oct/Nov 2013

26 Which statement about a light wave and a sound wave is correct? A Both can be polarised. B Both can travel through free space. C Both have a frequency inversely proportional to their wavelength. D Both have an intensity proportional to their amplitude. Space for working

1 marks

Answer: C

This question in 9702/12 Oct/Nov 2013

30 When plane-polarised light of amplitude A is passed through a polarising filter as shown, the amplitude of the light emerging is A cosθ. amplitude A intensity I θ plane-polarised light amplitude A cos θ polarising filter The intensity of the initial beam is I. What is the intensity of the emerging light when θ is 60.0°? A 0.250 I B 0.500 I C 0.750 I D 0.866 I Space for working

1 marks

Answer: A

This question in 9702/12 Oct/Nov 2013

22 Which statement about longitudinal waves is correct? A Longitudinal waves include radio waves travelling through air. B Particles in a longitudinal wave vibrate at right-angles to the direction of transfer of wave energy. C Some types of longitudinal wave can be polarised. D Stationary waves can be produced by the superposition of longitudinal waves.

1 marks

Answer: D

This question in 9702/11 May/June 2014

24 Which statement describes a situation when polarisation could not occur? A Light waves are reflected. B Light waves are scattered. C Microwaves pass through a metal grid. D Sound waves pass through a metal grid.

1 marks

Answer: D

This question in 9702/11 Oct/Nov 2014

24 Which statement describes a situation when polarisation could not occur? A Light waves are reflected. B Light waves are scattered. C Microwaves pass through a metal grid. D Sound waves pass through a metal grid.

1 marks

Answer: D

This question in 9702/12 Oct/Nov 2014

25 Which of the following wave motions may be used to demonstrate the phenomenon of polarisation? A a sound wave from a thunderclap B a surface wave in a water ripple tank C a stationary wave in an organ pipe D a stationary wave on a stretched wire

1 marks

Answer: D

This question in 9702/12 Oct/Nov 2015

24 Polarisation is a phenomenon associated with a certain type of wave. Which condition must be fulfilled if a wave is to be polarised? A It must be a light wave. B It must be a longitudinal wave. C It must be a radio wave. D It must be a transverse wave.

1 marks

Answer: D

This question in 9702/13 Oct/Nov 2015

26 Which statement about a light wave and a sound wave is correct? A Both can travel through free space. B Both have a frequency inversely proportional to their wavelength. C Both have an intensity proportional to their amplitude. D Both have oscillations perpendicular to the direction of energy transfer.

1 marks

Answer: B

This question in 9702/12 Oct/Nov 2019

25 Which statement about electromagnetic waves is correct? A A wave of wavelength 5.0  10–6 m is invisible to the human eye. B They can all travel at different speeds in free space. C They cannot be polarised. D They consist of vibrating atoms.

1 marks

Answer: A

This question in 9702/11 May/June 2022

26 Two polarising filters are placed next to each other so that their planes are parallel. The first polarising filter has its transmission axis at an angle of 50 to the vertical. The second polarising filter has its transmission axis at an angle of 20 to the vertical. The angle between the transmission axes of the two polarising filters is 30 A beam of vertically polarised light of intensity 8.0 W m–2 is incident normally on the first polarising filter. What is the intensity of the light that is transmitted from the second polarising filter? A zero B 2.5 W m–2 C 2.9 W m–2 D 6.0 W m–2

1 marks

Answer: B

This question in 9702/12 May/June 2022

23 Which statement about progressive transverse and longitudinal waves is correct? A Particles in a transverse wave have fixed equilibrium positions but those in longitudinal waves do not. B Transverse waves can be polarised but longitudinal waves cannot. C Transverse waves transfer energy but longitudinal waves do not. D Two-source interference can be demonstrated with transverse waves but not with longitudinal waves.

1 marks

Answer: B

This question in 9702/12 Oct/Nov 2022

21 Which statement about longitudinal waves and transverse waves is not correct? A Both waves can be polarised. B Both waves can form stationary waves. C Both waves can transfer energy as progressive waves. D Both waves obey the equation v = fλ.

1 marks

Answer: A

This question in 9702/12 Feb/March 2023

24 A beam of vertically polarised light is incident normally on a polarising filter. The filter can be rotated so that it is always in a plane perpendicular to the beam. The transmission axis of the filter is initially vertical. beam of vertically polarised light waves transmission axis of polarising filter transmitted light polarising filter The filter is first rotated clockwise by an angle of 30° so that the transmitted light waves have intensity I30.The filter is then rotated clockwise by a further angle of 30°. What is the new intensity of the transmitted light waves? A 0.25 I30 B 0.33 I30 C 0.75 I30 D 0.87 I30

1 marks

Answer: B

This question in 9702/12 Feb/March 2023

24 Avertically polarised beam of light is incident normally on a polarising filter. The transmission axis of the filter is at an angle of 40° to the horizontal. beam of vertically polarised light transmission axis of polarising filter polarising filter horizontal beam of transmitted light What is the ratio amplitude of transmitted beam 5 amplitude of incident beam A 041 B 0.59 C 0.64 D 0.77

1 marks

Answer: C

This question in 9702/11 May/June 2023

24 A vertically polarised beam of light of intensity J, is incident normally on a polarising filter. The transmission axis of the filter is at 45° to the vertical. The beam of light transmitted by this filter is then incident normally on a second filter. The transmission axis of the second filter is horizontal. transmission axis vertically of second filter polarised light transmission axis of first filter What is the intensity of the beam of light after transmission through the second filter? A 0 B tly c th D Io

1 marks

Answer: B

This question in 9702/12 May/June 2023

24 A source of plane polarised light is observed through two polarising filters. rotated anticlockwise rotated clockwise source of polarised light polarising filters observer The filters are positioned so that the source appears at its brightest. One of the filters is then rotated clockwise and the other filter is rotated anticlockwise through the same angle. How does the source appear when both filters have been rotated 90 and 180 from their initial positions? 90 180 A brightest brightest B brightest darkest C darkest brightest D darkest darkest

1 marks

Answer: C

This question in 9702/13 May/June 2023

24 A plane polarised light wave of intensity J is incident normally on a polarising filter. The initial intensity of the transmitted wave is 0. A second polarising filter is then inserted between the source and the first filter. Its transmission axis is at 45° to the transmission axis of the first filter, as shown. transmission axis of second filter at 45° to transmission axis source of polarised light, of first filter intensity J, transmission axis of first filter direction of travel of light wave What is the intensity of the transmitted wave from the filter combination? Ip ob > be 8 4 2 A 0 B

1 marks

Answer: C

This question in 9702/12 Oct/Nov 2023

24 A vertically polarised electromagnetic wave of intensity Jp is incident normally on a polarising filter. The transmission axis of the filter is at an angle of 30° to the vertical. The transmitted wave from the first filter is then incident normally on a second polarising filter. The transmission axis of this filter is at an angle of 90° to the vertical. transmission axis 30° __— polarising VA filters transmission axis vertically polarised electromagnetic wave What is the intensity of the wave after passing through the second filter? A 0 B 0.063 Ip C 0.19Ip D 0.561

1 marks

Answer: C

This question in 9702/13 Oct/Nov 2023

27 Which type of waves cannot be polarised? A radio waves B sound waves C ultraviolet waves D X-rays

1 marks

Answer: B

This question in 9702/12 Feb/March 2024

24 A plane polarised wave has amplitude A. The wave is incident normally on a polarising filter. The transmission axis of the filter is at angle  to the plane of polarisation of the incident wave. What is the amplitude of the wave that emerges from the filter? A A cos B A cos2 C A2 cos D A2 cos2

1 marks

Answer: A

This question in 9702/11 May/June 2024

29 Which wave cannot be a longitudinal wave? A a diffracted wave B a polarised wave C a reflected wave D a stationary wave

1 marks

Answer: B

This question in 9702/11 May/June 2024

24 Polarisation is associated with certain waves. Which waves cannot be polarised? A radio waves from a transmitter B sound waves from a moving source C ultraviolet rays from the Sun D X-rays from an X-ray emitter

1 marks

Answer: B

This question in 9702/12 May/June 2024

26 A student investigates the polarisation of microwaves. The microwaves from the transmitter are vertically polarised. A metal grille acts as a polarising filter when placed between the microwave transmitter and the receiver. The reading on the voltmeter is proportional to the intensity of microwaves transmitted through the grille. When the transmission axis of the grille is vertical, the voltmeter reads 3.50 V. receiver transmitter voltmeter metal grille The grille is then rotated through an angle . The voltmeter now reads 2.20 V. What is  ? A 37.5 B 39.0 C 51.0 D 52.5

1 marks

Answer: A

This question in 9702/13 May/June 2024

29 Radio waves can be polarised, but sound waves cannot be polarised. Which statement gives the reason for this? A Radio waves are generally of a higher frequency than sound waves. B Radio waves are transverse waves, but sound waves are longitudinal waves. C Radio waves can travel through a vacuum, but sound waves cannot travel through a vacuum. D Radio waves travel at a much higher speed than sound waves.

1 marks

Answer: B

This question in 9702/11 Oct/Nov 2024

23 A horizontal beam of vertically polarised light of amplitude A is incident normally on a polarising filter. The transmission axis of the filter is at an angle of 50 to the vertical. What is the amplitude of the light in the beam after it has passed through the filter? A 0.17A B 0.41A C 0.64A D 0.80A

1 marks

Answer: C

This question in 9702/12 Oct/Nov 2024

26 A polarised beam of light with intensity I is incident normally on a polarising filter. The transmitted light has intensity I. The filter is rotated about the normal axis through an angle . The transmitted light has intensity 0.75I. What is the angle  ? A 30° B 42° C 49° D 60°

1 marks

Answer: A

This question in 9702/12 Feb/March 2025

28 Which group contains only waves that can be polarised? A infrared waves, radio waves, sound waves B visible light waves, microwaves, radio waves C visible light waves, radio waves, sound waves D microwaves, visible light waves, sound waves A The waves are

1 marks

Answer: B

This question in 9702/11 May/June 2025

27 Vertically polarised light of intensity Jp is incident normally on a polarising filter. The transmission axis of the filter is at an angle @ to the plane of polarisation of the light. I The intensity of the light after passing through the filter is 3 . light intensity J, light intensity 3 direction of transmission axis What is 0? A 84° B 55° C 71° D 84°

1 marks

Answer: B

This question in 9702/12 May/June 2025

28 Which statement compares the behaviour of transverse and longitudinal waves? A Only longitudinal waves can be diffracted. B Only longitudinal waves can travel in free space. C Only transverse waves can be coherent. D Only transverse waves can be polarised.

1 marks

Answer: D

This question in 9702/12 May/June 2025

25 Which phenomenon is only associated with transverse waves? A diffraction B interference C polarisation D reflection

1 marks

Answer: C

This question in 9702/13 May/June 2025

24 A horizontal beam of light is incident normally on a polarising filter. The incident light is vertically polarised and has an intensity of 24 W m–2. The direction of the transmission axis of the filter is at an angle of 30 to the vertical. What is the intensity of the light in the transmitted beam? A 18 W m–2 B 21 W m–2 C 28 W m–2 D 32 W m–2

1 marks

Answer: A

This question in 9702/14 May/June 2025

24 Which row is correct for sound waves? can travel can be can diffract in a vacuum polarised through a gap A no no yes B yes no no C no yes no D no yes yes

1 marks

Answer: A

This question in 9702/11 Oct/Nov 2025

26 Two polarising filters are placed next to each other so that their planes are parallel. The first polarising filter has its transmission axis at an angle of 50° to the vertical. The second polarising filter has its transmission axis at an angle of 20° to the vertical. The angle between the transmission axes of the two polarising filters is 30° A beam of vertically polarised light of intensity 8.0 W m–2 is incident normally on the first polarising filter. What is the intensity of the light that is transmitted from the second polarising filter? A zero B 2.5 W m–2 C 2.9 W m–2 D 6.0 W m–2

1 marks

Answer: B

This question in 9702/11 Oct/Nov 2025

24 Which row is correct for sound waves? can travel can be can diffract in a vacuum polarised through a gap A no no yes B yes no no C no yes no D no yes yes

1 marks

Answer: A

This question in 9702/13 Oct/Nov 2025

26 Two polarising filters are placed next to each other so that their planes are parallel. The first polarising filter has its transmission axis at an angle of 50° to the vertical. The second polarising filter has its transmission axis at an angle of 20° to the vertical. The angle between the transmission axes of the two polarising filters is 30° A beam of vertically polarised light of intensity 8.0 W m–2 is incident normally on the first polarising filter. What is the intensity of the light that is transmitted from the second polarising filter? A zero B 2.5 W m–2 C 2.9 W m–2 D 6.0 W m–2

1 marks

Answer: B

This question in 9702/13 Oct/Nov 2025

25 Which statement about electromagnetic waves is correct? A A wave of wavelength 5.0  10–6 m is invisible to the human eye. B They can all travel at different speeds in free space. C They cannot be polarised. D They consist of vibrating atoms.

1 marks

Answer: A

This question in 9702/14 Oct/Nov 2025

28 What may be observed with light waves but not with sound waves? A diffraction B interference C polarisation D reflection

1 marks

Answer: C

This question in 9702/14 Oct/Nov 2025