| Date | November 2016 | Marks available | 1 | Reference code | 16N.1.HL.TZ0.25 |
| Level | Higher level | Paper | Paper 1 | Time zone | Time zone 0 |
| Command term | Question number | 25 | Adapted from | N/A |
Question
X and Y are two spherical black-body radiators that emit the same total power. The absolute temperature of X is half that of Y.
What is \(\frac{{{\text{radius of X}}}}{{{\text{radius of Y}}}}\)?
A. 4
B. 8
C. 16
D. 32
Markscheme
A
Examiners report
[N/A]
Syllabus sections
Show 82 related questions
- 17N.2.SL.TZ0.5b.ii: Suggest how the difference between λS and λE helps to account for the greenhouse effect.
- 17N.2.SL.TZ0.5b.i: Determine the mean temperature of the Earth.
- 17N.1.SL.TZ0.29: The three statements give possible reasons why an average value should be used for the solar...
- 17N.1.SL.TZ0.28: A black body emits radiation with its greatest intensity at a wavelength of Imax. The...
- 17M.1.HL.TZ1.25: The average albedo of glacier ice is 0.25. What is...
- 17M.1.HL.TZ1.23: An object can lose energy through I. conductionII. convectionIII. radiation What are...
- 17M.1.SL.TZ2.29: A room is at a constant temperature of 300 K. A hotplate in the room is at a temperature of...
- 17M.1.SL.TZ1.30: The average surface temperature of Mars is approximately 200 K and the average surface...
- 17M.1.SL.TZ1.29: Planet X and planet Y both emit radiation as black bodies. Planet X has a surface temperature...
- 17M.1.SL.TZ1.15: Two pulses are travelling towards each other. What is a possible pulse shape when the...
- 16M.2.HL.TZ0.9d: The average surface temperature of the Earth is actually 288 K. Suggest how the greenhouse...
- 16M.2.SL.TZ0.7b: The albedo of the atmosphere is 0.30. Deduce that the average intensity over the entire...
- 16M.2.SL.TZ0.7a: Show that the intensity of the solar radiation incident on the upper atmosphere of the Earth...
- 16N.1.HL.TZ0.24: The solar constant is the intensity of the Sun’s radiation at A. the surface of the...
- 16M.1.SL.TZ0.30: A black body of surface 1.0m2 emits electromagnetic radiation of peak wavelength 2.90×10–6m....
- 15M.1.SL.TZ2.30: Methane and carbon dioxide are both greenhouse gases that are believed to cause global...
- 15M.1.HL.TZ2.36: The graph shows the variation with wavelength of intensity of radiation emitted by two bodies...
- 15M.1.HL.TZ2.37: Methane and carbon dioxide are both greenhouse gases that are believed to cause global...
- 14M.1.SL.TZ1.29: A uranium nuclear fission reactor that attempts to operate without a moderator would A....
- 14M.1.SL.TZ1.26: A black body has kelvin temperature T and surface area A. The total power radiated by the...
- 14M.1.SL.TZ1.28: The average intensity of the solar radiation incident on a planet is 200 W m–2. The albedo of...
- 14M.1.HL.TZ1.37: A body X of emissivity e is at temperature T1. X is inside a box whose walls act as a black...
- 14M.1.SL.TZ2.26: A black body has absolute temperature T and surface area A. The intensity of the radiation...
- 14M.1.SL.TZ2.29: The greenhouse effect can be explained by the fact that the infrared radiation emitted by the...
- 14M.1.HL.TZ2.35: A black body has absolute temperature T and surface area A. The intensity of the radiation...
- 14M.2.SL.TZ1.4a: State the Stefan-Boltzmann law for a black body.
- 14M.2.SL.TZ1.4b: Deduce that the solar power incident per unit area at distance d from the Sun is given...
- 14M.2.SL.TZ1.4d: State two reasons why the solar power incident per unit area at a point on the surface of the...
- 14M.2.SL.TZ1.4c: Calculate, using the data given, the solar power incident per unit area at distance d from...
- 14M.2.SL.TZ1.4e: The average power absorbed per unit area at the Earth’s surface is 240Wm–2. By treating the...
- 14M.2.SL.TZ1.4f: Explain why the actual surface temperature of the Earth is greater than the value in (e).
- 14M.2.HL.TZ1.6c: Calculate, using the data given, the solar power incident per unit area at distance d from...
- 14M.2.HL.TZ1.6f: Explain why the actual surface temperature of the Earth is greater than the value in (e).
- 14M.2.HL.TZ1.6b: Deduce that the solar power incident per unit area at distance d from the Sun is given...
- 14M.2.HL.TZ1.6d: State two reasons why the solar power incident per unit area at a point on the surface of the...
- 14M.2.HL.TZ1.6e: The average power absorbed per unit area at the Earth’s surface is 240Wm–2. By treating the...
- 14M.2.HL.TZ1.6a: State the Stefan-Boltzmann law for a black body.
- 15N.1.SL.TZ0.27: It is suggested that the solar power incident at a point on the Earth’s surface depends...
- 15N.1.SL.TZ0.29: The average surface temperature of Mars is about 200 K. The average surface temperature of...
- 14N.1.SL.TZ0.28: The graph shows the emission spectrum for a black body at absolute temperature T1. Which...
- 14N.1.HL.TZ0.36: Changes in the climate are leading to a reduction in ice cover on Earth. Which of the...
- 14N.1.HL.TZ0.37: The graph shows the emission spectrum for a black body at absolute temperature T1. Which...
- 11N.1.SL.TZO.28: Which of the following geographical features has the lowest albedo? A. Polar ice capB....
- 11N.1.SL.TZO.30: Which of the following alternatives would be the most likely to increase the enhanced...
- 12N.1.SL.TZ0.26: For a black-body at absolute temperature T the power emitted per unit area is P. What is the...
- 13N.1.SL.TZ0.29: The surface temperature of a black-body emitter is doubled. By what factor does the power...
- 13N.1.HL.TZ0.37: Which option is not a possible solution to reduce the enhanced greenhouse effect? A....
- 12M.1.SL.TZ2.29: Gases in the Earth’s atmosphere believed to be responsible for the greenhouse effect...
- 12M.1.SL.TZ1.28: Increasing the temperature of a black-body will have the following effect on its emission...
- 13M.2.SL.TZ1.8e: The intensity of the Sun’s radiation at the position of the Earth’s orbit (the solar...
- 13M.2.SL.TZ2.9c: The average solar intensity incident at the surface of the Earth is 238 W m–2. (i) Assuming...
- 11M.1.SL.TZ2.29: Surface X has a temperature TX and emissivity εx. Surface Y has a temperature TY and...
- 11M.1.SL.TZ2.30: Large areas of rainforests are...
- 13M.2.SL.TZ2.9b: Wind power does not involve the production of greenhouse gases. Outline why the surface...
- 11M.1.HL.TZ2.37: Which of the...
- 13M.1.SL.TZ2.29: The graph shows the spectrum of a black-body. Which graph shows the spectrum of a body of...
- 13M.1.SL.TZ2.25: The use of which energy source enhances the greenhouse effect the most? A. WoodB. CoalC....
- 13M.1.SL.TZ2.30: A student states that the following factors may lead to global warming I. decreased albedo...
- 12M.2.SL.TZ2.8c: The radiant power of the Sun is 3.90 ×1026W. The average radius of the Earth’s orbit about...
- 12M.2.SL.TZ2.8e: Assuming that the Earth’s surface behaves as a black-body and that no energy is absorbed by...
- 12M.2.SL.TZ2.8d: Show, using your answer to (c), that the average intensity incident on the Earth’s surface is...
- 12M.2.SL.TZ1.2a: Explain why the power absorbed by the Earth...
- 12M.2.SL.TZ1.2b: The equation in (a) leads to the following expression which can be used to predict the...
- 11N.2.SL.TZ0.8b: The graph shows the variation with frequency of the percentage transmittance of...
- 11N.2.SL.TZ0.8a: Describe what is meant by the greenhouse effect in the Earth’s atmosphere.
- 12N.2.SL.TZ0.7a: The Pobeda ice island forms regularly when icebergs run aground near the Antarctic ice shelf....
- 12N.2.SL.TZ0.7b: Suggest the likely effect on the average albedo of the region in which the island was...
- 13N.2.SL.TZ0.6f: Nuclear fuels, unlike fossil fuels, produce no greenhouse gases. (i) Identify two greenhouse...
- 11M.1.SL.TZ1.25: What is the phenomenon that best explains why greenhouse gases absorb infrared radiation? A....
- 11M.1.SL.TZ1.26: In which of the following places will the albedo be greatest? A. A forestB. A grasslandC. An...
- 11M.1.SL.TZ1.28: A spherical black body has absolute temperature T1. The surroundings are kept at a lower...
- 11M.2.SL.TZ1.9b: The diagram shows a simplified model of the energy balance of the Earth’s surface. The...
- 11M.2.SL.TZ1.9c: (i) Outline a mechanism by which part of the radiation radiated by the Earth’s surface is...
- 11M.2.SL.TZ1.9a: The intensity of the Sun’s radiation at the position of the Earth is approximately 1400 W...
- 09M.1.SL.TZ1.29: Greenhouse gases A. reflect infrared radiation but absorb ultraviolet radiation. B. ...
- 09M.1.SL.TZ1.30: The rate of global warming might be reduced by A. replacing the use of coal and oil with...
- 10N.1.SL.TZ0.28: The diagram shows the variation with wavelength of the power per unit wavelength \(I\)...
- 09N.1.SL.TZ0.28: Which of the following is likely to increase greenhouse gas concentrations in the...
- 10M.1.SL.TZ1.30: Which of the following is most likely to reduce the enhanced greenhouse effect? A. ...
- 10M.1.SL.TZ1.29: The albedo for the oceans is lower than that for glaciers. This is because, compared to ice,...
- 10N.1.SL.TZ0.30: The diagram shows an energy balance climate model for a planet. The intensities of the...
- 09N.1.SL.TZ0.29: Venus and Earth may be regarded as behaving as black bodies. The mean temperature at the...
