The wavelengths corresponding to the maximum intensity of radiation emitted by the Sun and the Moon are $0.5 \times 10^{-6} \ m$ and $10^{-4} \ m$ respectively. The ratio of their temperatures is:

If a black wire of platinum is heated, its colour first appears red, then yellow, and finally white. This can be understood on the basis of:

In a certain planetary system,it is observed that one of the celestial bodies having a surface temperature of $200 \; K$,emits radiation of maximum intensity near the wavelength $12 \; \mu m$. The surface temperature (in $K$) of a nearby star which emits light of maximum intensity at a wavelength $\lambda = 4800 \; \mathring A$ is

$A$ black body at $1227^{\circ}C$ emits radiations with maximum intensity at a wavelength of $5000\;\mathring{A}$. If the temperature of the body is increased by $1000^{\circ}C$,the maximum intensity will be observed at ...... $\mathring{A}$.

The temperature of a furnace is $2000^\circ C$ and the wavelength of maximum intensity in its spectrum is $4000 \ \mathring{A}$. If the wavelength of maximum intensity is $2000 \ \mathring{A}$, calculate the temperature of the furnace in $^\circ C$.

On increasing the temperature of a substance gradually, which of the following colours will be noticed by you?