''$A$ perfect black body is black in colour.'' Is this statement true or false?

$A$ piece of blue glass heated to a high temperature and a piece of red glass at room temperature are taken inside a dimly lit room. Then:

At a high temperature,a body emits radiation of wavelengths $\lambda_1, \lambda_2, \lambda_3,$ and $\lambda_4$ only. At a lower temperature,which of the following wavelengths will it absorb?

The temperature of a blackbody radiation enclosed in a container of volume $V$ is increased from $100^{\circ} C$ to $1000^{\circ} C$. The heat required in the process is

Why do we wear white or light-coloured clothes in summer and dark-coloured clothes in winter?

Distribution of energy in the spectrum of a black body can be correctly represented by