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Consider the following statements.
- The physical temperature of an object determines the wavelength of the radiation it emits.
- The hotter the object, the longer the wavelength of peak emission.
- X-rays come from pulsars, galactic supernova remnants, and black holes.
How many of the above statements are correct?
- a)Only one
- b)Only two
- c)All three
- d)None
Correct answer is option 'B'. Can you explain this answer?
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Consider the following statements. The physical temperature of an obje...
Statement 2 is incorrect.
The physical temperature of an object determines the wavelength of the radiation it emits. The hotter the object, the shorter the wavelength of peak emission.
X-rays come from objects that are millions of degrees Celsius — such as pulsars, galactic supernova remnants, and black holes.
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Consider the following statements. The physical temperature of an obje...
Explanation:
- Statement 1: The physical temperature of an object determines the wavelength of the radiation it emits.
This statement is correct. According to Wien's displacement law, the wavelength of the peak emission of radiation from a black body is inversely proportional to its temperature. As the temperature of an object increases, the wavelength of the radiation it emits decreases.
- Statement 2: The hotter the object, the longer the wavelength of peak emission.
This statement is incorrect. The hotter the object, the shorter the wavelength of peak emission. As mentioned earlier, according to Wien's displacement law, the wavelength of peak emission decreases as the temperature increases.
- Statement 3: X-rays come from pulsars, galactic supernova remnants, and black holes.
This statement is incorrect. X-rays are not limited to only these sources. X-rays are produced by a variety of astronomical objects and phenomena, including supernova explosions, active galactic nuclei, neutron stars, and accretion disks around black holes. They can also be generated in laboratories and medical facilities.
Therefore, out of the three statements, only statement 1 is correct. The physical temperature of an object determines the wavelength of the radiation it emits.
- Statement 1: The physical temperature of an object determines the wavelength of the radiation it emits.
This statement is correct. According to Wien's displacement law, the wavelength of the peak emission of radiation from a black body is inversely proportional to its temperature. As the temperature of an object increases, the wavelength of the radiation it emits decreases.
- Statement 2: The hotter the object, the longer the wavelength of peak emission.
This statement is incorrect. The hotter the object, the shorter the wavelength of peak emission. As mentioned earlier, according to Wien's displacement law, the wavelength of peak emission decreases as the temperature increases.
- Statement 3: X-rays come from pulsars, galactic supernova remnants, and black holes.
This statement is incorrect. X-rays are not limited to only these sources. X-rays are produced by a variety of astronomical objects and phenomena, including supernova explosions, active galactic nuclei, neutron stars, and accretion disks around black holes. They can also be generated in laboratories and medical facilities.
Therefore, out of the three statements, only statement 1 is correct. The physical temperature of an object determines the wavelength of the radiation it emits.
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Consider the following statements. The physical temperature of an object determines the wavelength of the radiation it emits. The hotter the object, the longer the wavelength of peak emission. X-rays come from pulsars, galactic supernova remnants, and black holes.How many of the above statements are correct?a)Only oneb)Only twoc)All threed)NoneCorrect answer is option 'B'. Can you explain this answer?
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