Question

The heating effect is used in the measurement of the wavelength of:

• A. \( \text{X-rays} \)
• B. \( \text{Infrared} \)
• C. \( \text{Ultraviolet rays} \)
• D. \( \text{Visible light} \)

Hint:

Infrared radiation increases molecular vibrational energy, making it useful for thermal measurements.

Answer 1

The Correct Option is B

Infrared (IR) radiation is absorbed by molecular bonds, causing heat generation, which is fundamental for IR spectroscopy. Other radiations (UV, X-ray, visible) primarily influence electronic transitions rather than heat effects.