Question

Clothes of _________(dark\white) colors absorb heat better than the clothes of light colors.

Answer 1

From the popular mnemonic (VIBGYOR)device which is used for memorizing the optical spectrum, where V stands for violet, I stands for indigo, B for blue, G for green, Y for yellow, O for orange and R for red. In the VIBGYOR, when we move from left to right the wavelength increases so RED has the longest wavelength. While when we move from left to right frequency decreases so VIOLET has the highest frequency.

Complete answer:
The more light the objects absorbs, the more heat absorbed since light is energy. The reason on which heat absorption depends is that the darker colors absorb more of the different wavelengths of light energy, while white or light-colored objects reflect the light of most wavelengths. Hence BLACK absorbs all wavelengths of light and reflects none. While white reflects all wavelengths of light and absorbs the least.

The answer to the above question is DARK.

Note: Officially wavelength can be defined as the distance between two successive crests or troughs of a wave. Different wavelengths of light appear to our eyes as different colors. Red has $650nm$ wavelength while black and white do not have specific wavelengths. Instead, white contains all wavelengths of a visible light and black is the absence of visible light.