Question

Frequency of emitted radiation from a black body goes from a lower wavelength to higher wavelength as the temperature increases.

• A. True
• B. False

Answer 1

Answer: (B)

False

Answer 2

The statement is incorrect. According to Wien's displacement law, $\lambda_{max} T = b$, the peak wavelength ($\lambda_{max}$) of emitted radiation from a black body is inversely proportional to its absolute temperature ($T$). As the temperature increases, the peak wavelength decreases, meaning the spectrum shifts towards shorter wavelengths and higher frequencies. The statement incorrectly suggests a shift towards longer wavelengths (lower frequencies) as temperature increases.