At high temperature, the proportion of shorter wavelength
Correct answer: C. increases
- A. decreases
- B. remain same
- C. increases
- D. none of these
Explanation
According to Wien's displacement law, as the temperature increases, the proportion of shorter wavelengths in the emitted radiation increases. This means that the peak wavelength of radiation emitted by a black body shifts to shorter wavelengths as the temperature increases.Incorrect Options and Explanations: (a) decreases - The proportion of shorter wavelengths increases as the temperature increases, according to Wien's displacement law. (b) remain same - The proportion of shorter wavelengths changes as the temperature increases. (d) none of these - The proportion of shorter wavelengths does change with temperature.
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Electromagnetic waves consist of mutually perpendicular, oscillating electric and magnetic fields that also remain perpendicular to the direction of propagation. They travel through vacuum at the speed of light and include radio waves, microwaves, infrared, visible, ultraviolet, X-rays and gamma rays. Unlike mechanical waves, they do not require a material medium.
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