Question

Which of the following rays of light has the maximum energy?

• A. Reflection of UV rays by $C{O}_2$ and $H_{2}O$
• B. Reflection of IR rays by $C{O}_2$ and $H_{2}O$
• C. Reflection of IR rays by $O_2$ and $N_2$
• D. Reflection of UV rays by $O_2$ and $N_2$

Answer 1

The correct option is B Reflection of IR rays by $C{O}_2$ and $H_{2}O$

All the rays are part of the electromagnetic spectrum. According to their wavelength and frequency their energy is calculated and so are they placed on the electromagnetic spectrum scale.
According to the scale the IR rays have the lowest energy among the given elctromagnetic rays with their frequency ranging from 430THz to 300GHz and their wavelength ranging from 700nm to 1mm.
UV rays have their frequency ranging from $8x{10}^{1}4$ Hz to $3x{10}^{1}6$ Hz and their wavelength ranging from 10nm to 380nm.
X-rays have their frequency ranging from $3x{10}^{1}6$ Hz to $3x{10}^{1}9$ Hz and their wavelength ranging from 0.01nm to 10nm.
Gamma rays having the highest energy levels, have their frequency ranging from ${10}^{1}9$ to ${10}^{3}0$ Hz and their wavelengths less than ${10}^{-12}$.