Let there be four articles having colours blue, red, black and white. When they are heated together and allowed to cool, which article will cool at the earliest?

Question

Let there be four articles having colours blue, red, black and white. When they are heated together and allowed to cool, which article will cool at the earliest? (A) Blue (B) Red (C) Black (D) White

Tardigrade Admin · Accepted Answer

According to wein's law T propto (1/λ ) Red colour have maximum wavelength, so its temperature will be minimum and hence it will cool at the earliest.

Q. Let there be four articles having colours blue, red, black and white. When they are heated together and allowed to cool, which article will cool at the earliest?

Blue

Red

Black

White

According to wein's law $T \propto \frac{1}{λ}$ Red colour have maximum wavelength, so its temperature will be minimum and hence it will cool at the earliest.

Q. Let there be four articles having colours blue, red, black and white. When they are heated together and allowed to cool, which article will cool at the earliest?

Blue

Red

Black

White

According to wein's law T∝λ1​ Red colour have maximum wavelength, so its temperature will be minimum and hence it will cool at the earliest.

According to wein's law $T \propto \frac{1}{λ}$ Red colour have maximum wavelength, so its temperature will be minimum and hence it will cool at the earliest.