Question:
If a body is at 1727°C, the wavelength at which the body emits maximum radiation is:
If a body is at 1727°C, the wavelength at which the body emits maximum radiation is:
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Higher temperature → smaller wavelength of maximum emission.
Updated On: May 22, 2026
- 1.45 μm
- 1.45 cm
- 0.450 μm
- 0.457 cm
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The Correct Option is A
Solution and Explanation
Concept:
Wien’s displacement law:
\[
\lambda_{\max} T = 2898 \, \mu m \cdot K
\]
Step 1: Convert temperature to Kelvin.
\[ T = 1727 + 273 = 2000 K \]
Step 2: Apply Wien’s law.
\[ \lambda_{\max} = \frac{2898}{2000} \] \[ \lambda_{\max} = 1.449 \, \mu m \]
Step 3: Final result.
\[ \boxed{1.45 \, \mu m} \]
Step 1: Convert temperature to Kelvin.
\[ T = 1727 + 273 = 2000 K \]
Step 2: Apply Wien’s law.
\[ \lambda_{\max} = \frac{2898}{2000} \] \[ \lambda_{\max} = 1.449 \, \mu m \]
Step 3: Final result.
\[ \boxed{1.45 \, \mu m} \]
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