Which one is correct about Wien’s law for blackbody radiation?
It gives the relationship between
the maximum wavelength and intensity
the temperature and intensity
the range of wavelength and frequency
the wavelength for its maximum intensity and temperature
Based on Wien’s law and Blackbody radiation spectrum, the Earth’s radiation curve peaks at:
right side of Sun’s peak
left side of Sun’s peak
shorter wavelength side of Sun’s peak
all of above
Wien's law for blackbody radiation gives the relationship between the wavelength for its maximum intensity and temperature. Therefore, the correct option about Wien's law is "the wavelength for its maximum intensity and temperature."
Based on Wien's law and the blackbody radiation spectrum, the Earth's radiation curve peaks at the longer wavelength side of the Sun's peak. Therefore, none of the given options ("right side of Sun's peak," "left side of Sun's peak," and "shorter wavelength side of Sun's peak") is correct.
The correct statement about Wien's law for blackbody radiation is that it gives the relationship between the wavelength for its maximum intensity and temperature.
Wien's law states that the wavelength at which a blackbody radiates the most energy (or its maximum intensity) is inversely proportional to its temperature. Mathematically, it can be expressed as:
λ_max = b / T
Where λ_max is the wavelength at maximum intensity, T is the temperature of the blackbody, and b is a constant known as Wien's displacement constant.
Now, regarding the Earth's radiation curve and its peak, it is important to understand that the Earth is not a blackbody; it reflects, absorbs, and emits radiation. However, if we consider the Earth's emission spectrum, it predominantly falls within the infrared range of the electromagnetic spectrum.
The Earth's radiation curve peaks at longer wavelengths compared to the Sun's peak. This means that the Earth's peak is on the right side of the Sun's peak. Therefore, the correct answer is "right side of Sun’s peak."